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Fencer Vulns
high 7.8

CVE-2025-21764 json

ndisc: use RCU protection in ndisc_alloc_skb()

published 2025-02-27 20 mo ago modified 2026-10-15 25 d ago also EUVD-2025-5159

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

ndisc: use RCU protection in ndisc_alloc_skb()

ndisc_alloc_skb() can be called without RTNL or RCU being held.

Add RCU protection to avoid possible UAF.

Patch / fix

  • Linux Linux 5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.79, 6.12.16, 6.13.4, 6.14
  • linux Debian 12 6.1.129-1
  • linux Debian 14, Debian 13 6.12.16-1

debian advisories DEBIAN-CVE-2025-21764

  • linux Ubuntu 20.04 LTS 5.4.0-216.236
  • linux Ubuntu 22.04 LTS 5.15.0-140.150
  • linux Ubuntu 24.04 LTS 6.8.0-78.78
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1146.156
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1084.91
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1035.37
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1149.158
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1083.92

ubuntu advisories UBUNTU-CVE-2025-21764

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt RHEL 8 4.18.0-553.58.1.rt7.399.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.58.1.rt7.399.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.58.1.rt7.399.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.58.1.rt7.399.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.58.1.rt7.399.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.58.1.rt7.399.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.58.1.rt7.399.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.58.1.rt7.399.el8_10

red hat advisories RHSA-2025:10211RHSA-2025:9584RHSA-2025:9581RHSA-2025:9580RHSA-2025:9498RHSA-2025:9494

  • kernel-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.145.1
  • kernel-source-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.145.1
  • kernel-64kb SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS, SLE High Performance Computing 15 SP4-ESPOS 5.14.21-150400.24.194.1
  • kernel-syms SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 5.14.21-150400.24.194.1
  • kernel-source SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 5.14.21-150400.24.194.1
  • kernel-default SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +5 more 5.14.21-150400.24.194.1
  • kernel-obs-build SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 5.14.21-150400.24.194.1
  • kernel-default-base SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +3 more 5.14.21-150400.24.194.1.150400.24.98.3

suse advisories SUSE-SU-2026:1131-1SUSE-SU-2026:0617-1SUSE-SU-2026:0496-1SUSE-SU-2026:0495-1SUSE-SU-2026:0475-1SUSE-SU-2026:0474-1

  • kernel AlmaLinux 8 4.18.0-553.58.1.el8_10
  • perf AlmaLinux 8 4.18.0-553.58.1.el8_10
  • bpftool AlmaLinux 8 4.18.0-553.58.1.el8_10
  • kernel-core AlmaLinux 8 4.18.0-553.58.1.el8_10
  • kernel-tools AlmaLinux 8 4.18.0-553.58.1.el8_10
  • python3-perf AlmaLinux 8 4.18.0-553.58.1.el8_10
  • kernel-modules AlmaLinux 8 4.18.0-553.58.1.el8_10
  • kernel-zfcpdump AlmaLinux 8 4.18.0-553.58.1.el8_10

almalinux advisories ALSA-2025:9580ALSA-2025:9581ALSA-2025:8333

  • kernel Rocky Linux 9 5.14.0-570.19.1.el9_6
  • kernel Rocky Linux 10 6.12.0-55.17.1.el10_0
  • kernel-rt Rocky Linux 8 4.18.0-553.58.1.rt7.399.el8_10
  • kernel Rocky Linux 8 4.18.0-553.58.1.el8_10

rocky linux advisories RLSA-2025:8333RLSA-2025:9079RLSA-2025:9581RLSA-2025:9580

  • kernel CBL-Mariner 2.0 5.15.180.1-1
  • kernel Azure Linux 3.0 6.6.82.1-1

azure linux advisories AZL-58898AZL-58925

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-21764 updated cvss 7.0

kernel: ndisc: use RCU protection in ndisc_alloc_skb()

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.74.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.74.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.74.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.74.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.74.1.el9_4
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-570.19.1.el9_6, perf 5.14.0-570.19.1.el9_6, rtla 5.14.0-570.19.1.el9_6, python3-perf 5.14.0-570.19.1.el9_6, kernel-devel-matched 5.14.0-570.19.1.el9_6, kernel-64k-devel-matched 5.14.0-570.19.1.el9_6, +7 more
    fixed: vendor fix RHSA-2025:8333
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-55.17.1.el10_0, perf 6.12.0-55.17.1.el10_0, rtla 6.12.0-55.17.1.el10_0, python3-perf 6.12.0-55.17.1.el10_0, kernel-devel-matched 6.12.0-55.17.1.el10_0, kernel-64k-devel-matched 6.12.0-55.17.1.el10_0, +7 more
    fixed: vendor fix RHSA-2025:9079
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.134.1.el9_0, kernel-devel-matched 5.14.0-70.134.1.el9_0, kernel-debug-devel-matched 5.14.0-70.134.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.134.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.134.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.134.1.el9_0, +2 more
    fixed: vendor fix RHSA-2025:9494
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.121.1.el9_2, rtla 5.14.0-284.121.1.el9_2, kernel-devel-matched 5.14.0-284.121.1.el9_2, kernel-64k-devel-matched 5.14.0-284.121.1.el9_2, kernel-debug-devel-matched 5.14.0-284.121.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.121.1.el9_2, +5 more
    fixed: vendor fix RHSA-2025:9491
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.74.1.el9_4, perf 5.14.0-427.74.1.el9_4, rtla 5.14.0-427.74.1.el9_4, kernel-devel-matched 5.14.0-427.74.1.el9_4, kernel-64k-devel-matched 5.14.0-427.74.1.el9_4, kernel-debug-devel-matched 5.14.0-427.74.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:9584
show 27 more
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.58.1.el8_10, kernel 4.18.0-553.58.1.el8_10, bpftool 4.18.0-553.58.1.el8_10, kernel-core 4.18.0-553.58.1.el8_10, kernel-tools 4.18.0-553.58.1.el8_10, python3-perf 4.18.0-553.58.1.el8_10, +15 more
    fixed: vendor fix RHSA-2025:9580
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-570.19.1.el9_6, kernel-64k 5.14.0-570.19.1.el9_6, kernel-core 5.14.0-570.19.1.el9_6, kernel-tools 5.14.0-570.19.1.el9_6, kernel-modules 5.14.0-570.19.1.el9_6, kernel-64k-core 5.14.0-570.19.1.el9_6, +27 more
    fixed: vendor fix RHSA-2025:8333
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-55.17.1.el10_0, kernel-64k 6.12.0-55.17.1.el10_0, kernel-core 6.12.0-55.17.1.el10_0, kernel-tools 6.12.0-55.17.1.el10_0, kernel-modules 6.12.0-55.17.1.el10_0, kernel-64k-core 6.12.0-55.17.1.el10_0, +27 more
    fixed: vendor fix RHSA-2025:9079
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.154.1.el8_2, kernel 4.18.0-193.154.1.el8_2, bpftool 4.18.0-193.154.1.el8_2, kernel-core 4.18.0-193.154.1.el8_2, kernel-tools 4.18.0-193.154.1.el8_2, python3-perf 4.18.0-193.154.1.el8_2, +8 more
    fixed: vendor fix RHSA-2025:9490
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.159.1.el8_4, kernel 4.18.0-305.159.1.el8_4, bpftool 4.18.0-305.159.1.el8_4, kernel-core 4.18.0-305.159.1.el8_4, kernel-tools 4.18.0-305.159.1.el8_4, python3-perf 4.18.0-305.159.1.el8_4, +8 more
    fixed: vendor fix RHSA-2025:9497
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.149.1.el8_6, kernel 4.18.0-372.149.1.el8_6, bpftool 4.18.0-372.149.1.el8_6, kernel-core 4.18.0-372.149.1.el8_6, kernel-tools 4.18.0-372.149.1.el8_6, python3-perf 4.18.0-372.149.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.149.1.el8_6, kernel 4.18.0-372.149.1.el8_6, bpftool 4.18.0-372.149.1.el8_6, kernel-core 4.18.0-372.149.1.el8_6, kernel-tools 4.18.0-372.149.1.el8_6, python3-perf 4.18.0-372.149.1.el8_6, +15 more
    fixed: vendor fix RHSA-2025:9498
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.100.1.el8_8, kernel 4.18.0-477.100.1.el8_8, bpftool 4.18.0-477.100.1.el8_8, kernel-core 4.18.0-477.100.1.el8_8, kernel-tools 4.18.0-477.100.1.el8_8, python3-perf 4.18.0-477.100.1.el8_8, +9 more
    fixed: vendor fix RHSA-2025:10211
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.134.1.el9_0, bpftool 5.14.0-70.134.1.el9_0, kernel-core 5.14.0-70.134.1.el9_0, kernel-tools 5.14.0-70.134.1.el9_0, python3-perf 5.14.0-70.134.1.el9_0, kernel-modules 5.14.0-70.134.1.el9_0, +14 more
    fixed: vendor fix RHSA-2025:9494
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.121.1.el9_2, kernel 5.14.0-284.121.1.el9_2, kernel-64k 5.14.0-284.121.1.el9_2, kernel-core 5.14.0-284.121.1.el9_2, kernel-tools 5.14.0-284.121.1.el9_2, python3-perf 5.14.0-284.121.1.el9_2, +28 more
    fixed: vendor fix RHSA-2025:9491
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.74.1.el9_4, kernel 5.14.0-427.74.1.el9_4, kernel-64k 5.14.0-427.74.1.el9_4, kernel-core 5.14.0-427.74.1.el9_4, kernel-tools 5.14.0-427.74.1.el9_4, python3-perf 5.14.0-427.74.1.el9_4, +28 more
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.149.1.el8_6, kernel 4.18.0-372.149.1.el8_6, bpftool 4.18.0-372.149.1.el8_6, kernel-core 4.18.0-372.149.1.el8_6, kernel-tools 4.18.0-372.149.1.el8_6, python3-perf 4.18.0-372.149.1.el8_6, +8 more
    fixed: vendor fix RHSA-2025:9498
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.100.1.el8_8, kernel 4.18.0-477.100.1.el8_8, bpftool 4.18.0-477.100.1.el8_8, kernel-core 4.18.0-477.100.1.el8_8, kernel-tools 4.18.0-477.100.1.el8_8, python3-perf 4.18.0-477.100.1.el8_8, +8 more
    fixed: vendor fix RHSA-2025:10211
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-570.19.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.19.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.19.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.19.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.19.1.el9_6
    fixed: vendor fix RHSA-2025:8333
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-55.17.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.17.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.17.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.17.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.17.1.el10_0
    fixed: vendor fix RHSA-2025:9079
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.58.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.58.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.58.1.el8_10
    fixed: vendor fix RHSA-2025:9580
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-kvm 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-core 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-modules 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-debug-kvm 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-debug-core 4.18.0-553.58.1.rt7.399.el8_10, +4 more
    fixed: vendor fix RHSA-2025:9581
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-kvm 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-core 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-modules 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-debug-kvm 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-debug-core 5.14.0-70.134.1.rt21.206.el9_0, +4 more
    fixed: vendor fix RHSA-2025:9493
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-570.19.1.el9_6, kernel-rt-64k 5.14.0-570.19.1.el9_6, kernel-rt-core 5.14.0-570.19.1.el9_6, kernel-rt-modules 5.14.0-570.19.1.el9_6, kernel-rt-64k-core 5.14.0-570.19.1.el9_6, kernel-rt-debug-core 5.14.0-570.19.1.el9_6, +14 more
    fixed: vendor fix RHSA-2025:8333
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-55.17.1.el10_0, kernel-rt-64k 6.12.0-55.17.1.el10_0, kernel-rt-core 6.12.0-55.17.1.el10_0, kernel-rt-modules 6.12.0-55.17.1.el10_0, kernel-rt-64k-core 6.12.0-55.17.1.el10_0, kernel-rt-debug-core 6.12.0-55.17.1.el10_0, +14 more
    fixed: vendor fix RHSA-2025:9079
  • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-core 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-modules 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-debug-core 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-debug-modules 5.14.0-70.134.1.rt21.206.el9_0, kernel-rt-modules-extra 5.14.0-70.134.1.rt21.206.el9_0, +2 more
    fixed: vendor fix RHSA-2025:9493
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-core 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-modules 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-debug-core 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-modules-core 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-debug-modules 5.14.0-284.121.1.rt14.406.el9_2, +4 more
    fixed: vendor fix RHSA-2025:9492
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.74.1.el9_4, kernel-rt-core 5.14.0-427.74.1.el9_4, kernel-rt-modules 5.14.0-427.74.1.el9_4, kernel-rt-debug-core 5.14.0-427.74.1.el9_4, kernel-rt-modules-core 5.14.0-427.74.1.el9_4, kernel-rt-debug-modules 5.14.0-427.74.1.el9_4, +4 more
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-570.19.1.el9_6, kernel-rt-kvm 5.14.0-570.19.1.el9_6, kernel-rt-core 5.14.0-570.19.1.el9_6, kernel-rt-modules 5.14.0-570.19.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.19.1.el9_6, kernel-rt-debug-core 5.14.0-570.19.1.el9_6, +6 more
    fixed: vendor fix RHSA-2025:8333
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-55.17.1.el10_0, kernel-rt-kvm 6.12.0-55.17.1.el10_0, kernel-rt-core 6.12.0-55.17.1.el10_0, kernel-rt-modules 6.12.0-55.17.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.17.1.el10_0, kernel-rt-debug-core 6.12.0-55.17.1.el10_0, +6 more
    fixed: vendor fix RHSA-2025:9079
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-kvm 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-core 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-modules 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-debug-kvm 5.14.0-284.121.1.rt14.406.el9_2, kernel-rt-debug-core 5.14.0-284.121.1.rt14.406.el9_2, +6 more
    fixed: vendor fix RHSA-2025:9492
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.74.1.el9_4, kernel-rt-kvm 5.14.0-427.74.1.el9_4, kernel-rt-core 5.14.0-427.74.1.el9_4, kernel-rt-modules 5.14.0-427.74.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.74.1.el9_4, kernel-rt-debug-core 5.14.0-427.74.1.el9_4, +6 more
    fixed: vendor fix RHSA-2025:9584
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-core 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-modules 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-debug-core 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-debug-modules 4.18.0-553.58.1.rt7.399.el8_10, kernel-rt-modules-extra 4.18.0-553.58.1.rt7.399.el8_10, +2 more
    fixed: vendor fix RHSA-2025:9581

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-295-11 updated cvss 7.8

Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.7 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.7 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.7 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.7 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.7
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-26-295-16 updated cvss 7.8

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-26-209-04 updated cvss 7.8

Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.6 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.6 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.6 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.6 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.6
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-24-102-01 updated cvss 7.8

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.