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Fencer Vulns
high 7.2

CVE-2025-20053 json

Improper buffer restrictions for some Intel(R) Xeon(R) Processor firmware with SGX enabled may allow a privileged user to potentially enabl…

published 2025-08-12 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-24440

cvss
7.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits
0
none known

Summary

Improper buffer restrictions for some Intel(R) Xeon(R) Processor firmware with SGX enabled may allow a privileged user to potentially enable escalation of privilege via local access.

Patch / fix

  • intel-microcode Debian 12 3.20250812.1~deb12u1
  • intel-microcode Debian 13 3.20250812.1~deb13u1
  • intel-microcode Debian 14 3.20250812.1

debian advisories DEBIAN-CVE-2025-20053

  • intel-microcode Ubuntu 22.04 LTS 3.20250812.0ubuntu0.22.04.1
  • intel-microcode Ubuntu 24.04 LTS 3.20250812.0ubuntu0.24.04.1
  • intel-microcode Ubuntu 25.10 3.20250812.0ubuntu0.25.10.1
  • intel-microcode Ubuntu Pro 16.04 LTS 3.20250812.0ubuntu0.16.04.1+esm1
  • intel-microcode Ubuntu Pro 18.04 LTS 3.20250812.0ubuntu0.18.04.1+esm1
  • intel-microcode Ubuntu Pro 20.04 LTS 3.20250812.0ubuntu0.20.04.1+esm1

ubuntu advisories UBUNTU-CVE-2025-20053

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

  • ucode-intel Linux Micro 6.0 20250812-1.1
  • ucode-intel Linux Micro 6.1 20250812-slfo.1.1_1.1
  • ucode-intel SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +19 more 20250812-150200.59.1
  • microcode_ctl SLES 11 SP4 LTSS EXTREME CORE 1.17-102.83.87.1
  • ucode-intel SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 20250812-155.1

suse advisories SUSE-SU-2025:20715-1SUSE-SU-2025:03116-1SUSE-SU-2025:20691-1SUSE-SU-2025:03053-1SUSE-SU-2025:03052-1

  • ucode-intel openSUSE Tumbleweed 20250812-1.1

opensuse advisories openSUSE-SU-2025:15491-1

  • intel-ucode Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 20250812-r0

alpine advisories ALPINE-CVE-2025-20053

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
14 mo ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.0 CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CNA 3.1 7.2 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
CNA 4.0 7.0 CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/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) Xeon(R) Processor firmware with SGX enabled

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.