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Fencer Vulns
medium 5.6

CVE-2024-28956 json

Exposure of Sensitive Information in Shared Microarchitectural Structures during Transient Execution for some Intel(R) Processors may allow…

published 2025-05-13 17 mo ago modified 2026-10-15 25 d ago also EUVD-2025-14601

cvss
5.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

Exposure of Sensitive Information in Shared Microarchitectural Structures during Transient Execution for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Patch / fix

  • xen Debian 12 4.17.5+72-g01140da4e8-1
  • xen Debian 13 4.20.2+7-g1badcf5035-0+deb13u1
  • xen Debian 14 4.20.2+7-g1badcf5035-1
  • linux Debian 12 6.1.140-1
  • linux Debian 14, Debian 13 6.12.29-1
  • intel-microcode Debian 12 3.20250512.1~deb12u1
  • intel-microcode Debian 14, Debian 13 3.20250512.1

debian advisories DEBIAN-CVE-2024-28956

  • linux Ubuntu 22.04 LTS 5.15.0-144.157
  • linux Ubuntu 24.04 LTS 6.8.0-100.100
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1088.95
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1046.49
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1087.96
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1047.50
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1085.91
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1043.48

ubuntu advisories UBUNTU-CVE-2024-28956

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 RHEL 10.1 6.12.0-124.8.1.el10_1
  • rv RHEL 10.1 6.12.0-124.8.1.el10_1
  • perf RHEL 10.1 6.12.0-124.8.1.el10_1
  • rtla RHEL 10.1 6.12.0-124.8.1.el10_1
  • libperf RHEL 10.1 6.12.0-124.8.1.el10_1
  • kernel-rt RHEL 10.1 6.12.0-124.8.1.el10_1
  • kernel-64k RHEL 10.1 6.12.0-124.8.1.el10_1
  • kernel-core RHEL 10.1 6.12.0-124.8.1.el10_1

red hat advisories RHSA-2025:20095RHSA-2025:19962RHSA-2025:13962RHSA-2025:10991RHBA-2025:9433RHSA-2025:10162

  • 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
  • kernel-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.142.1
  • kernel-source-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.142.1

suse advisories SUSE-SU-2026:0617-1SUSE-SU-2026:0411-1SUSE-SU-2025:03204-1SUSE-SU-2025:02326-1SUSE-SU-2025:02321-1SUSE-SU-2025:02290-1

  • spectre-meltdown-checker openSUSE Tumbleweed 26.36.0602723-1.1
  • kernel-source-longterm openSUSE Tumbleweed 6.18.16-1.1
  • xen openSUSE Tumbleweed 4.20.0_12-1.1
  • ucode-intel openSUSE Tumbleweed 20250512-1.1
  • kernel-source openSUSE Tumbleweed 6.14.6-1.1

opensuse advisories openSUSE-SU-2026:11242-1openSUSE-SU-2026:10301-1openSUSE-SU-2025:15142-1openSUSE-SU-2025:15093-1openSUSE-SU-2025:15086-1

  • kernel AlmaLinux 10 6.12.0-124.8.1.el10_1
  • rv AlmaLinux 10 6.12.0-124.8.1.el10_1
  • perf AlmaLinux 10 6.12.0-124.8.1.el10_1
  • rtla AlmaLinux 10 6.12.0-124.8.1.el10_1
  • libperf AlmaLinux 10 6.12.0-124.8.1.el10_1
  • kernel-rt AlmaLinux 10 6.12.0-124.8.1.el10_1
  • kernel-64k AlmaLinux 10 6.12.0-124.8.1.el10_1
  • kernel-core AlmaLinux 10 6.12.0-124.8.1.el10_1

almalinux advisories ALSA-2025:20095ALSA-2025:13962ALSA-2025:10991

  • kernel Rocky Linux 10 6.12.0-124.8.1.el10_1
  • microcode_ctl Rocky Linux 8 4:20250512-1.el8_10

rocky linux advisories RLSA-2025:20095RLSA-2025:10991

  • xen Alpine 3.18 4.17.5-r4
  • xen Alpine 3.20, Alpine 3.19 4.18.5-r0
  • xen Alpine 3.21 4.19.2-r1
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 4.20.0-r1
  • intel-ucode Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 20250512-r0

alpine advisories ALPINE-CVE-2024-28956

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2024-28956 updated cvss 5.6

microcode_ctl: From CVEorg collector

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, microcode_ctl, kernel-firmware, +2 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, python-perf, kernel-kdump, kernel-tools, +3 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-core, kernel-tools, python3-perf, +17 more
    affected: workaround, no fix available “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.”
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-570.35.1.el9_6, perf 5.14.0-570.35.1.el9_6, rtla 5.14.0-570.35.1.el9_6, python3-perf 5.14.0-570.35.1.el9_6, kernel-devel-matched 5.14.0-570.35.1.el9_6, kernel-64k-devel-matched 5.14.0-570.35.1.el9_6, +7 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:13962
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-124.8.1.el10_1, rv 6.12.0-55.43.1.el10_0, perf 6.12.0-124.8.1.el10_1, perf 6.12.0-55.43.1.el10_0, rtla 6.12.0-124.8.1.el10_1, rtla 6.12.0-55.43.1.el10_0, +20 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:19962
  • Red Hat Enterprise Linux BaseOS (v. 8) microcode_ctl 20250512-1.el8_10
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10991
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-570.35.1.el9_6, kernel-64k 5.14.0-570.35.1.el9_6, kernel-core 5.14.0-570.35.1.el9_6, kernel-tools 5.14.0-570.35.1.el9_6, kernel-modules 5.14.0-570.35.1.el9_6, kernel-64k-core 5.14.0-570.35.1.el9_6, +28 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:13962
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-124.8.1.el10_1, kernel 6.12.0-55.43.1.el10_0, kernel-64k 6.12.0-124.8.1.el10_1, kernel-64k 6.12.0-55.43.1.el10_0, kernel-core 6.12.0-124.8.1.el10_1, kernel-core 6.12.0-55.43.1.el10_0, +61 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:19962
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) microcode_ctl 20191115-4.20250512.1.el8_2
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10126
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) microcode_ctl 20210216-1.20250512.1.el8_4
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10107
show 16 more
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) microcode_ctl 20220207-1.20250512.1.el8_6 Red Hat Enterprise Linux BaseOS E4S (v.8.6) microcode_ctl 20220207-1.20250512.1.el8_6
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10109
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) microcode_ctl 20220809-2.20250512.1.el8_8
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10162
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) microcode_ctl 20220207-1.20250512.1.el9_0
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10103
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) microcode_ctl 20220809-2.20250512.1.el9_2
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10102
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) microcode_ctl 20230808-2.20250512.1.el9_4
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10101
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) microcode_ctl 20220207-1.20250512.1.el8_6
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10109
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) microcode_ctl 20220809-2.20250512.1.el8_8
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10162
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-570.35.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.35.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.35.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.35.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.35.1.el9_6
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:13962
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-124.8.1.el10_1, libperf 6.12.0-55.43.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-124.8.1.el10_1, kernel-debuginfo-common-s390x 6.12.0-55.43.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-124.8.1.el10_1, kernel-debuginfo-common-x86_64 6.12.0-55.43.1.el10_0, +4 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:19962
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-570.35.1.el9_6, kernel-rt-64k 5.14.0-570.35.1.el9_6, kernel-rt-core 5.14.0-570.35.1.el9_6, kernel-rt-modules 5.14.0-570.35.1.el9_6, kernel-rt-64k-core 5.14.0-570.35.1.el9_6, kernel-rt-debug-core 5.14.0-570.35.1.el9_6, +14 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:13962
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-124.8.1.el10_1, kernel-rt 6.12.0-55.43.1.el10_0, kernel-rt-64k 6.12.0-124.8.1.el10_1, kernel-rt-64k 6.12.0-55.43.1.el10_0, kernel-rt-core 6.12.0-124.8.1.el10_1, kernel-rt-core 6.12.0-55.43.1.el10_0, +34 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:19962
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-570.35.1.el9_6, kernel-rt-kvm 5.14.0-570.35.1.el9_6, kernel-rt-core 5.14.0-570.35.1.el9_6, kernel-rt-modules 5.14.0-570.35.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.35.1.el9_6, kernel-rt-debug-core 5.14.0-570.35.1.el9_6, +6 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:13962
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-124.8.1.el10_1, kernel-rt 6.12.0-55.43.1.el10_0, kernel-rt-kvm 6.12.0-55.43.1.el10_0, kernel-rt-core 6.12.0-124.8.1.el10_1, kernel-rt-core 6.12.0-55.43.1.el10_0, kernel-rt-modules 6.12.0-124.8.1.el10_1, +16 more
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:19962
  • Red Hat Enterprise Linux Server (v. 7 ELS) microcode_ctl 2.1-73.24.el7_9
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10108
  • Red Hat Enterprise Linux Server AUS (v. 7.7) microcode_ctl 2.1-53.26.el7_7.1
    fixed: vendor fix “No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.” RHSA-2025:10111
  • Red Hat Enterprise Linux 10 microcode_ctl Red Hat Enterprise Linux BaseOS (v. 9) kernel-debug 5.14.0-570.35.1.el9_6
    not affected: vulnerable code not present

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 5.6

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-26-209-04 updated cvss 5.6

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 SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 5.7 CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA 3.1 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
CNA 4.0 5.7 CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • n/a Intel(R) Processors
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-1421 Exposure of Sensitive Information in Shared Microarchitectural Structures during Transient Execution

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.