CVE-2025-54518

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-05-15. a secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

A fix is available — apply it.

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 v3
7.0
EG Score
7.0(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

May 15, 2026

Last Modified

August 19, 2026

Advisory Details (2)

Auto-updated May 15, 2026
No patch confirmed yet.
generic

XSA-490 - Xen Security Advisories

http://xenbits.xen.org/xsa/advisory-490.html
generic

oss-security - Xen Security Advisory 490 v1 (CVE-2025-54518) - x86: CPU Opcode Cache corruption

http://www.openwall.com/lists/oss-security/2026/05/12/15

Vendor Advisories for CVE-2025-54518(10)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-20ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-20ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-20ubuntu
ubuntulinux-tools-aws-edge (5.15.0.1112.119~20.04.1) @ focal2026-08-20ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-20ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-20ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-20ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-20ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-20ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-20ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-20ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-20ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-20ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-20ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-20ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-20ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-20ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-20ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-20ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-20ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-20ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-20ubuntu
redhatkernel-0:5.14.0-427.145.1.el9_42026-08-19redhat
redhatrhcos-4.22.9.8.202608130832-02026-08-18redhat
redhatkernel-0:4.18.0-477.159.1.el8_82026-08-17redhat
redhatkernel-0:5.14.0-570.134.1.el9_62026-08-12redhat
redhatkernel-0:4.18.0-372.206.1.el8_62026-08-12redhat
redhatkernel-0:5.14.0-687.38.1.el9_82026-08-11redhat
redhatkernel-rt-0:4.18.0-553.153.1.rt7.494.el8_102026-08-06redhat
redhatkernel-0:4.18.0-553.153.1.el8_102026-08-06redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(9 across 9 ecosystems)
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
xen—4.18.5-r8—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
xen—4.19.5-r3—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
xen—4.20.3-r3—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
xen—4.20.3-r3—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
xen—4.21.1-r4—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
xen4.14.2+25-gb6a8c4f72d-2 ... 4.20.3+127-gc42374a105-1 (46 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
xen4.17.1+2-gb773c48e36-1 ... 4.20.3+127-gc42374a105-1 (25 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
xen4.20.0+68-g35cb38b222-1 ... 4.20.3+127-gc42374a105-1 (7 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
xen4.20.0+68-g35cb38b222-1, 4.20.2+37-g61ff35323e-1, 4.20.2+7-g1badcf5035-1, 4.20.2+7-g1badcf5035-24.20.3+127-gc42374a105-1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(17)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 32× in last 7d / 120× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 307 total refreshes for this CVE.

  1. 2026-08-20 22:54 UTCEPSS rescore
  2. 2026-08-20 19:27 UTCEG score recompute
  3. 2026-08-20 19:27 UTCVendor advisory
  4. 2026-08-20 19:27 UTCGHSA enrichment
  5. 2026-08-19 17:03 UTCEPSS rescore
  6. 2026-08-19 12:27 UTCEG score recompute
  7. 2026-08-19 12:27 UTCVendor advisory
  8. 2026-08-19 12:27 UTCGHSA enrichment
  9. 2026-08-19 12:11 UTCEG score recompute
  10. 2026-08-19 12:11 UTCVendor advisory
  11. 2026-08-19 12:11 UTCGHSA enrichment
  12. 2026-08-18 13:47 UTCEPSS rescore
  13. 2026-08-17 13:46 UTCEPSS rescore
  14. 2026-08-17 12:20 UTCEG score recompute
  15. 2026-08-17 12:20 UTCVendor advisory
  16. 2026-08-17 12:20 UTCGHSA enrichment
  17. 2026-08-17 12:12 UTCVendor advisory
  18. 2026-08-17 12:12 UTCGHSA enrichment
  19. 2026-08-17 10:18 UTCEG score recompute
  20. 2026-08-17 10:18 UTCVendor advisory
  21. 2026-08-17 10:18 UTCGHSA enrichment
  22. 2026-08-16 14:55 UTCEPSS rescore
  23. 2026-08-16 03:51 UTCEG score recompute
  24. 2026-08-16 03:51 UTCVendor advisory
  25. 2026-08-16 03:51 UTCGHSA enrichment
Show 75 more
  1. 2026-08-16 02:13 UTCEPSS rescore
  2. 2026-08-15 01:29 UTCEPSS rescore
  3. 2026-08-15 00:44 UTCVendor advisory
  4. 2026-08-15 00:44 UTCGHSA enrichment
  5. 2026-08-14 12:29 UTCEG score recompute
  6. 2026-08-14 12:29 UTCVendor advisory
  7. 2026-08-14 12:29 UTCGHSA enrichment
  8. 2026-08-14 02:20 UTCEG score recompute
  9. 2026-08-14 02:20 UTCVendor advisory
  10. 2026-08-14 02:20 UTCGHSA enrichment
  11. 2026-08-13 21:59 UTCEPSS rescore
  12. 2026-08-13 00:52 UTCEG score recompute
  13. 2026-08-13 00:52 UTCVendor advisory
  14. 2026-08-13 00:52 UTCGHSA enrichment
  15. 2026-08-12 13:50 UTCEPSS rescore
  16. 2026-08-12 13:50 UTCEPSS rescore
  17. 2026-08-12 12:37 UTCEG score recompute
  18. 2026-08-12 12:37 UTCVendor advisory
  19. 2026-08-12 12:37 UTCGHSA enrichment
  20. 2026-08-12 12:12 UTCEG score recompute
  21. 2026-08-12 12:12 UTCVendor advisory
  22. 2026-08-12 12:12 UTCGHSA enrichment
  23. 2026-08-12 01:38 UTCEG score recompute
  24. 2026-08-12 01:38 UTCVendor advisory
  25. 2026-08-12 01:38 UTCGHSA enrichment
  26. 2026-08-11 13:42 UTCEPSS rescore
  27. 2026-08-11 13:23 UTCEG score recompute
  28. 2026-08-11 13:23 UTCVendor advisory
  29. 2026-08-11 13:23 UTCGHSA enrichment
  30. 2026-08-11 12:24 UTCEG score recompute
  31. 2026-08-11 12:24 UTCVendor advisory
  32. 2026-08-11 12:24 UTCGHSA enrichment
  33. 2026-08-11 00:49 UTCEG score recompute
  34. 2026-08-11 00:49 UTCVendor advisory
  35. 2026-08-11 00:49 UTCGHSA enrichment
  36. 2026-08-10 23:59 UTCEPSS rescore
  37. 2026-08-10 02:17 UTCVendor advisory
  38. 2026-08-10 02:17 UTCGHSA enrichment
  39. 2026-08-09 14:02 UTCEG score recompute
  40. 2026-08-09 14:02 UTCVendor advisory
  41. 2026-08-09 14:02 UTCGHSA enrichment
  42. 2026-08-09 13:46 UTCEPSS rescore
  43. 2026-08-09 01:46 UTCEG score recompute
  44. 2026-08-09 01:46 UTCVendor advisory
  45. 2026-08-09 01:46 UTCGHSA enrichment
  46. 2026-08-08 16:36 UTCEPSS rescore
  47. 2026-08-08 02:23 UTCEG score recompute
  48. 2026-08-08 02:23 UTCVendor advisory
  49. 2026-08-08 02:23 UTCGHSA enrichment
  50. 2026-08-07 16:26 UTCEPSS rescore
  51. 2026-08-07 14:08 UTCVendor advisory
  52. 2026-08-07 14:08 UTCGHSA enrichment
  53. 2026-08-07 01:53 UTCEG score recompute
  54. 2026-08-07 01:53 UTCVendor advisory
  55. 2026-08-07 01:53 UTCGHSA enrichment
  56. 2026-08-06 13:46 UTCEPSS rescore
  57. 2026-08-06 13:38 UTCEG score recompute
  58. 2026-08-06 13:38 UTCVendor advisory
  59. 2026-08-06 13:38 UTCGHSA enrichment
  60. 2026-08-06 12:34 UTCEG score recompute
  61. 2026-08-06 12:34 UTCVendor advisory
  62. 2026-08-06 12:34 UTCGHSA enrichment
  63. 2026-08-06 09:56 UTCVendor advisory
  64. 2026-08-06 09:56 UTCGHSA enrichment
  65. 2026-08-05 21:32 UTCEG score recompute
  66. 2026-08-05 21:32 UTCVendor advisory
  67. 2026-08-05 21:32 UTCGHSA enrichment
  68. 2026-08-05 19:16 UTCEPSS rescore
  69. 2026-08-04 15:09 UTCEPSS rescore
  70. 2026-08-04 15:09 UTCEPSS rescore
  71. 2026-08-04 10:37 UTCEPSS rescore
  72. 2026-08-03 18:56 UTCEG score recompute
  73. 2026-08-03 18:56 UTCVendor advisory
  74. 2026-08-03 18:56 UTCGHSA enrichment
  75. 2026-08-03 10:35 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-54518?
CVE-2025-54518 is a high vulnerability published on May 15, 2026. 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.
When was CVE-2025-54518 disclosed?
CVE-2025-54518 was first published in the National Vulnerability Database on May 15, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-54518 actively exploited?
CVE-2025-54518 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.7% of all scored CVEs.
What is the CVSS score of CVE-2025-54518?
CVE-2025-54518 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2025-54518?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-54518, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-54518

Explore →

Is Your Infrastructure Affected by CVE-2025-54518?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs