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Fencer Vulns
medium 5.5

CVE-2020-0543 json

Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentiall…

published 2020-06-15 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-2041

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Patch / fix

  • siemens simatic_field_pg_m5_firmware 22.01.08
  • siemens simatic_field_pg_m6_firmware 26.01.07
  • siemens simatic_ipc427e_firmware 21.01.14
  • siemens simatic_ipc477e_firmware 21.01.14
  • siemens simatic_ipc477e_pro_firmware 21.01.14
  • siemens simatic_ipc527g_firmware 1.4.0
  • siemens simatic_ipc547g_firmware r1.28.0
  • siemens simatic_ipc627e_firmware 25.02.06
  • siemens simatic_ipc647e_firmware 25.02.06
  • siemens simatic_ipc677e_firmware 25.02.06
  • siemens simatic_ipc847e_firmware 25.02.06
  • siemens simatic_ipc3000_smart_firmware 1.b
  • siemens simatic_itp1000_firmware 23.01.08
  • linux Debian 14, Debian 13, Debian 12 5.6.14-2
  • intel-microcode Debian 14, Debian 13, Debian 12 3.20200609.1

debian advisories DEBIAN-CVE-2020-0543

  • xen Ubuntu 20.04 LTS 4.11.3+24-g14b62ab3e5-1ubuntu2.3
  • intel-microcode Ubuntu 16.04 LTS 3.20200609.0ubuntu0.16.04.0
  • intel-microcode Ubuntu 18.04 LTS 3.20200609.0ubuntu0.18.04.0
  • intel-microcode Ubuntu 20.04 LTS 3.20200609.0ubuntu0.20.04.0
  • intel-microcode Ubuntu Pro 14.04 LTS 3.20200609.0ubuntu0.14.04.0

ubuntu advisories UBUNTU-CVE-2020-0543

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

  • microcode_ctl RHEL 7 2:2.1-73.11.el7_9
  • microcode_ctl RHEL 8 4:20210216-1.20210608.1.el8_4
  • microcode_ctl RHEL 7 2:2.1-61.6.el7_8
  • microcode_ctl RHEL 8 4:20191115-4.20200602.2.el8_2
  • microcode_ctl RHEL 6 2:1.17-33.26.el6_10
  • microcode_ctl RHEL 7.3 AUS 2:2.1-16.42.el7_3
  • microcode_ctl RHEL 7.2 AUS 2:2.1-12.39.el7_2
  • microcode_ctl RHEL 7.6 TUS, RHEL 7.6 E4S, RHEL 7.6 AUS 2:2.1-47.23.el7_6

red hat advisories RHSA-2021:3322RHSA-2021:3323RHSA-2021:3317RHSA-2021:3364RHSA-2021:3255RHSA-2021:3176

  • sca-patterns-hae SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.10.3.1
  • sca-patterns-base SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.0-150300.10.3.1
  • sca-patterns-suma SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.0-150300.9.3.1
  • sca-server-report SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.11.3.1
  • sca-patterns-sle11 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.18.3.1
  • sca-patterns-sle12 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.3.3.1
  • sca-patterns-sle15 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.14.3.1
  • sca-patterns-sle11 SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +11 more 1.3.1-7.6.1

suse advisories SUSE-FU-2022:4496-1SUSE-SU-2021:1497-1SUSE-SU-2020:14521-1SUSE-SU-2020:2822-1SUSE-SU-2020:2487-1SUSE-SU-2020:2478-1

  • spectre-meltdown-checker openSUSE Tumbleweed 26.36.0602723-1.1
  • sca-patterns-sle11 openSUSE Tumbleweed 1.3.5-1.2
  • sca-patterns-sle12 openSUSE Tumbleweed 1.0.8-2.2
  • sca-patterns-sle15 openSUSE Tumbleweed 1.0.8-2.2
  • ucode-intel openSUSE Tumbleweed 20210608-1.2
  • xen openSUSE Tumbleweed 4.15.1_01-1.2
  • kernel-rt openSUSE Leap 15.2 5.3.18-lp152.3.5.1
  • kernel-syms-rt openSUSE Leap 15.2 5.3.18-lp152.3.5.1

opensuse advisories openSUSE-SU-2026:11242-1openSUSE-SU-2024:11369-1openSUSE-SU-2024:11370-1openSUSE-SU-2024:11371-1openSUSE-SU-2024:11478-1openSUSE-SU-2024:11520-1

  • microcode_ctl Rocky Linux 8 4:20210216-1.20210608.1.el8_4

rocky linux advisories RLSA-2021:3027

  • xen Alpine 3.10 4.12.3-r1
  • xen Alpine 3.12, Alpine 3.11 4.13.1-r1
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 4.13.1-r3
  • xen Alpine 3.9 4.11.4-r0

alpine advisories ALPINE-CVE-2020-0543

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

  • intel-ucode Arch Linux 20200609-1

arch linux advisories AVG-1187

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-2020-0543 updated cvss 6.5

hw: Special Register Buffer Data Sampling (SRBDS)

  • Red Hat Enterprise Linux 5 kernel-xen, microcode_ctl
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux BaseOS (v. 8) microcode_ctl 20191115-4.20200602.2.el8_2, microcode_ctl 20210216-1.20210608.1.el8_4
    fixed: vendor fix RHSA-2020:2431
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.0) microcode_ctl 20180807a-2.20200609.1.el8_0
    fixed: vendor fix RHSA-2020:2757
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) microcode_ctl 20190618-1.20200609.1.el8_1, microcode_ctl 20190618-1.20210608.1.el8_1
    fixed: vendor fix RHSA-2020:2677
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) microcode_ctl 20191115-4.20210608.1.el8_2
    fixed: vendor fix RHSA-2021:3364
  • Red Hat Enterprise Linux Client (v. 7) microcode_ctl 2.1-61.6.el7_8, microcode_ctl 2.1-73.11.el7_9 Red Hat Enterprise Linux ComputeNode (v. 7) microcode_ctl 2.1-61.6.el7_8
    fixed: vendor fix RHSA-2020:2432
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) microcode_ctl 2.1-47.14.el7_6
    fixed: vendor fix RHSA-2020:2842
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) microcode_ctl 2.1-53.9.el7_7, microcode_ctl 2.1-53.18.el7_7
    fixed: vendor fix RHSA-2021:3029
show 19 more
  • Red Hat Enterprise Linux Desktop (v. 6) microcode_ctl 1.17-33.26.el6_10 Red Hat Enterprise Linux HPC Node (v. 6) microcode_ctl 1.17-33.26.el6_10 Red Hat Enterprise Linux Server (v. 6) microcode_ctl 1.17-33.26.el6_10
    fixed: vendor fix RHSA-2020:2433
  • Red Hat Enterprise Linux Server (v. 7) microcode_ctl 2.1-61.6.el7_8, microcode_ctl 2.1-73.11.el7_9
    fixed: vendor fix RHSA-2020:2432
  • Red Hat Enterprise Linux Server AUS (v. 6.5) microcode_ctl 1.17-17.31.el6_5
    fixed: vendor fix RHSA-2020:2707
  • Red Hat Enterprise Linux Server AUS (v. 6.6) microcode_ctl 1.17-19.29.el6_6
    fixed: vendor fix RHSA-2020:2706
  • Red Hat Enterprise Linux Server AUS (v. 7.2) microcode_ctl 2.1-12.30.el7_2, microcode_ctl 2.1-12.39.el7_2
    fixed: vendor fix RHSA-2020:2679
  • Red Hat Enterprise Linux Server AUS (v. 7.3) microcode_ctl 2.1-16.33.el7_3, microcode_ctl 2.1-16.42.el7_3
    fixed: vendor fix RHSA-2020:2680
  • Red Hat Enterprise Linux Server AUS (v. 7.4) microcode_ctl 2.1-22.32.el7_4, microcode_ctl 2.1-22.41.el7_4
    fixed: vendor fix RHSA-2020:2771
  • Red Hat Enterprise Linux Server AUS (v. 7.6) microcode_ctl 2.1-47.23.el7_6
    fixed: vendor fix RHSA-2021:3317
  • Red Hat Enterprise Linux Server E4S (v. 7.3) microcode_ctl 2.1-16.33.el7_3
    fixed: vendor fix RHSA-2020:2680
  • Red Hat Enterprise Linux Server E4S (v. 7.4) microcode_ctl 2.1-22.32.el7_4, microcode_ctl 2.1-22.41.el7_4
    fixed: vendor fix RHSA-2020:2771
  • Red Hat Enterprise Linux Server E4S (v. 7.6) microcode_ctl 2.1-47.23.el7_6
    fixed: vendor fix RHSA-2021:3317
  • Red Hat Enterprise Linux Server EUS (v. 7.6) microcode_ctl 2.1-47.14.el7_6
    fixed: vendor fix RHSA-2020:2842
  • Red Hat Enterprise Linux Server EUS (v. 7.7) microcode_ctl 2.1-53.9.el7_7, microcode_ctl 2.1-53.18.el7_7
    fixed: vendor fix RHSA-2021:3029
  • Red Hat Enterprise Linux Server TUS (v. 7.3) microcode_ctl 2.1-16.33.el7_3
    fixed: vendor fix RHSA-2020:2680
  • Red Hat Enterprise Linux Server TUS (v. 7.4) microcode_ctl 2.1-22.32.el7_4, microcode_ctl 2.1-22.41.el7_4
    fixed: vendor fix RHSA-2020:2771
  • Red Hat Enterprise Linux Server TUS (v. 7.6) microcode_ctl 2.1-47.23.el7_6
    fixed: vendor fix RHSA-2021:3317
  • Red Hat Enterprise Linux Workstation (v. 6) microcode_ctl 1.17-33.26.el6_10
    fixed: vendor fix RHSA-2020:2433
  • Red Hat Enterprise Linux Workstation (v. 7) microcode_ctl 2.1-61.6.el7_8, microcode_ctl 2.1-73.11.el7_9
    fixed: vendor fix RHSA-2020:2432
  • Red Hat Enterprise Linux 5 kernel 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, kernel-alt, python-perf, +9 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise MRG 2 kernel
    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-20-252-07 updated cvss 5.5

Siemens Industrial Products (Update F)

  • Siemens SIMATIC Field PG M4
    affected: mitigation, no fix planned
  • Siemens SIMATIC Field PG M5 <BIOS_V22.01.08
    affected: fixed in V22.01.08, mitigation support.industry.siemens.com
  • Siemens SIMATIC Field PG M6 <BIOS_V26.01.07
    affected: fixed in V26.01.07, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC347E Siemens SIMATIC IPC427D (incl. SIPLUS variants)
    affected: mitigation, no fix planned
  • Siemens SIMATIC IPC427E (incl. SIPLUS variants) <BIOS_V21.01.14
    affected: fixed in V21.01.14, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC477D
    affected: mitigation, no fix planned
  • Siemens SIMATIC IPC477E <BIOS_V21.01.14 Siemens SIMATIC IPC477E Pro <BIOS_V21.01.14
    affected: fixed in V21.01.14, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC527G <BIOS_V1.4.0
    affected: fixed in V1.4.0, mitigation support.industry.siemens.com
show 13 more
  • Siemens SIMATIC IPC547E
    affected: mitigation, no fix planned
  • Siemens SIMATIC IPC547G <BIOS_R1.28.0
    affected: vendor fix, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC627D
    affected: mitigation, no fix planned
  • Siemens SIMATIC IPC627E <BIOS_V25.02.06
    affected: fixed in V25.02.06, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC647D
    affected: mitigation, no fix planned
  • Siemens SIMATIC IPC647E <BIOS_V25.02.06
    affected: fixed in V25.02.06, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC677D
    affected: mitigation, no fix planned
  • Siemens SIMATIC IPC677E <BIOS_V25.02.06
    affected: fixed in V25.02.06, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC827D Siemens SIMATIC IPC847D
    affected: mitigation, no fix planned
  • Siemens SIMATIC IPC847E <BIOS_V25.02.06
    affected: fixed in V25.02.06, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC3000 SMART V2 <V1.B
    affected: fixed in V1.B, mitigation support.industry.siemens.com
  • Siemens SIMATIC ITP1000 <BIOS_V23.01.08
    affected: fixed in V23.01.08, mitigation support.industry.siemens.com
  • Siemens SIMOTION P320-4E Siemens SIMOTION P320-4S
    affected: mitigation, no fix planned

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

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a Intel(R) Processors

Classification

Weakness

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.