7.3

CVE-2025-54518: xen

Awaiting analysis
AliasesALPINE-CVE-2025-54518RHSA-2026:50978RHSA-2026:50979
Published 15-05-2026Last modified 10-09-2026

Vulnerability summary

CVE-2025-54518 is a high (CVSS 7.3) vulnerability in xen. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 21.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.3, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.3/10
010
High · v4.0 (CVE.org)
EPSS score
0.29%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 84 · Related 78
OPENSUSE-SU-2026:21555-1RHSA-2026:53329RHSA-2026:53989RHSA-2026:53990RHSA-2026:55444RHSA-2026:56573

Timeline

  1. 15-05-2026
    PublishedVulnerability first disclosed.
  2. 10-09-2026
    Last modifiedVulnerability information updated.

Description

Improper isolation of shared resources within the CPU operation cache on Zen 2-based products could allow an attacker to corrupt instructions executed at a different privilege level, potentially resulting in privilege escalation.

CVSS metrics

9 scores · 6 sources · 2 versions

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.29% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu167 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Redhat30 products
  • bpftool< 0:4.18.0-553.153.1.el8_10
  • bpftool-debuginfo< 0:4.18.0-553.153.1.el8_10
  • kernel< 0:4.18.0-553.153.1.el8_10
  • kernel-abi-stablelists< 0:4.18.0-553.153.1.el8_10
  • kernel-core< 0:4.18.0-553.153.1.el8_10
Alpine1 product
  • xen< 4.18.5-r8 | < 4.19.5-r3 | < 4.20.3-r3 | < 4.21.1-r4
Debian1 product
  • xen< 4.17.7-0+deb12u1 | < 4.20.3+127-gc42374a105-0+deb13u1 | < 4.20.3+127-gc42374a105-1
Opensuse1 product
  • xen&distro=openSUSE Tumbleweed< 4.21.1_06-1.1

5 vendors · 200 products · Showing 200 of 219

References

70 links
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