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
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
22%
KEV
Not listed

Published

May 15, 2026

Last Modified

September 10, 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(18)

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
redhatrhcos-416.94.202609011112-02026-09-10redhat
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-09-10ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-09-10ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-09-10ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-10ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-09-10ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-09-10ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-09-10ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-09-10ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-09-10ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-10ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-10ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-09-10ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-10ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-09-10ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-09-10ubuntu
redhatrhcos-417.94.202608250221-02026-09-03redhat
redhatrhcos-412.86.202608241157-02026-09-03redhat
redhatrhcos-4.19.9.6.202608182320-02026-08-26redhat
redhatrhcos-4.20.9.6.202608181658-02026-08-25redhat
redhatrhcos-4.21.9.6.202608180431-02026-08-25redhat
redhatkernel-0:4.18.0-305.201.1.el8_42026-08-24redhat
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-0:4.18.0-372.206.1.el8_62026-08-12redhat
redhatkernel-0:5.14.0-570.134.1.el9_62026-08-12redhat
redhatkernel-0:5.14.0-687.38.1.el9_82026-08-11redhat
redhatkernel-0:4.18.0-553.153.1.el8_102026-08-06redhat
redhatkernel-rt-0:4.18.0-553.153.1.rt7.494.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 ... 4.20.2+7-g1badcf5035-2 (6 versions)4.20.3+127-gc42374a105-0+deb13u1—
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

(9)

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 7× in last 7d / 77× 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 380 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-17 19:29 UTCEPSS rescore
  4. 2026-09-16 14:07 UTCEPSS rescore
  5. 2026-09-16 05:14 UTCEPSS rescore
  6. 2026-09-13 16:46 UTCEPSS rescore
  7. 2026-09-12 15:00 UTCEPSS rescore
  8. 2026-09-11 14:52 UTCEPSS rescore
  9. 2026-09-11 09:36 UTCEPSS rescore
  10. 2026-09-10 13:22 UTCEG score recompute
  11. 2026-09-10 13:22 UTCVendor advisory
  12. 2026-09-10 13:22 UTCGHSA enrichment
  13. 2026-09-10 12:27 UTCEG score recompute
  14. 2026-09-10 12:27 UTCVendor advisory
  15. 2026-09-10 12:26 UTCGHSA enrichment
  16. 2026-09-10 09:34 UTCEPSS rescore
  17. 2026-09-08 21:59 UTCEPSS rescore
  18. 2026-09-07 16:00 UTCEPSS rescore
  19. 2026-09-06 13:47 UTCEPSS rescore
  20. 2026-09-05 15:28 UTCEPSS rescore
  21. 2026-09-04 13:29 UTCEG score recompute
  22. 2026-09-04 13:29 UTCVendor advisory
  23. 2026-09-04 13:29 UTCGHSA enrichment
  24. 2026-09-04 12:22 UTCEG score recompute
  25. 2026-09-04 12:22 UTCVendor advisory
Show 75 more
  1. 2026-09-04 12:22 UTCGHSA enrichment
  2. 2026-09-04 05:06 UTCEPSS rescore
  3. 2026-09-02 14:11 UTCEPSS rescore
  4. 2026-09-01 13:53 UTCEPSS rescore
  5. 2026-09-01 12:21 UTCEG score recompute
  6. 2026-09-01 12:21 UTCVendor advisory
  7. 2026-09-01 12:21 UTCGHSA enrichment
  8. 2026-09-01 04:38 UTCEPSS rescore
  9. 2026-08-30 19:16 UTCEPSS rescore
  10. 2026-08-30 01:21 UTCEPSS rescore
  11. 2026-08-28 21:40 UTCEPSS rescore
  12. 2026-08-27 14:24 UTCEPSS rescore
  13. 2026-08-27 13:35 UTCEG score recompute
  14. 2026-08-27 13:35 UTCVendor advisory
  15. 2026-08-27 13:35 UTCGHSA enrichment
  16. 2026-08-27 13:02 UTCEG score recompute
  17. 2026-08-27 13:02 UTCVendor advisory
  18. 2026-08-27 13:02 UTCGHSA enrichment
  19. 2026-08-26 16:11 UTCEG score recompute
  20. 2026-08-26 16:11 UTCVendor advisory
  21. 2026-08-26 16:10 UTCGHSA enrichment
  22. 2026-08-26 14:45 UTCEPSS rescore
  23. 2026-08-26 12:22 UTCEG score recompute
  24. 2026-08-26 12:22 UTCVendor advisory
  25. 2026-08-26 12:21 UTCGHSA enrichment
  26. 2026-08-25 13:48 UTCEPSS rescore
  27. 2026-08-25 13:24 UTCEG score recompute
  28. 2026-08-25 13:24 UTCVendor advisory
  29. 2026-08-25 13:24 UTCGHSA enrichment
  30. 2026-08-25 12:20 UTCEG score recompute
  31. 2026-08-25 12:20 UTCVendor advisory
  32. 2026-08-25 12:20 UTCGHSA enrichment
  33. 2026-08-24 14:16 UTCEPSS rescore
  34. 2026-08-24 12:26 UTCEG score recompute
  35. 2026-08-24 12:26 UTCVendor advisory
  36. 2026-08-24 12:25 UTCGHSA enrichment
  37. 2026-08-24 09:22 UTCEPSS rescore
  38. 2026-08-23 17:32 UTCEG score recompute
  39. 2026-08-23 17:32 UTCVendor advisory
  40. 2026-08-23 17:31 UTCGHSA enrichment
  41. 2026-08-23 00:18 UTCEPSS rescore
  42. 2026-08-22 01:35 UTCEG score recompute
  43. 2026-08-22 01:35 UTCVendor advisory
  44. 2026-08-22 01:35 UTCGHSA enrichment
  45. 2026-08-21 23:48 UTCEPSS rescore
  46. 2026-08-21 12:31 UTCEG score recompute
  47. 2026-08-21 12:31 UTCVendor advisory
  48. 2026-08-21 12:31 UTCGHSA enrichment
  49. 2026-08-20 22:54 UTCEPSS rescore
  50. 2026-08-20 19:27 UTCEG score recompute
  51. 2026-08-20 19:27 UTCVendor advisory
  52. 2026-08-20 19:27 UTCGHSA enrichment
  53. 2026-08-19 17:03 UTCEPSS rescore
  54. 2026-08-19 12:27 UTCEG score recompute
  55. 2026-08-19 12:27 UTCVendor advisory
  56. 2026-08-19 12:27 UTCGHSA enrichment
  57. 2026-08-19 12:11 UTCEG score recompute
  58. 2026-08-19 12:11 UTCVendor advisory
  59. 2026-08-19 12:11 UTCGHSA enrichment
  60. 2026-08-18 13:47 UTCEPSS rescore
  61. 2026-08-17 13:46 UTCEPSS rescore
  62. 2026-08-17 12:20 UTCEG score recompute
  63. 2026-08-17 12:20 UTCVendor advisory
  64. 2026-08-17 12:20 UTCGHSA enrichment
  65. 2026-08-17 12:12 UTCVendor advisory
  66. 2026-08-17 12:12 UTCGHSA enrichment
  67. 2026-08-17 10:18 UTCEG score recompute
  68. 2026-08-17 10:18 UTCVendor advisory
  69. 2026-08-17 10:18 UTCGHSA enrichment
  70. 2026-08-16 14:55 UTCEPSS rescore
  71. 2026-08-16 03:51 UTCEG score recompute
  72. 2026-08-16 03:51 UTCVendor advisory
  73. 2026-08-16 03:51 UTCGHSA enrichment
  74. 2026-08-16 02:13 UTCEPSS rescore
  75. 2026-08-15 01:29 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 September 10, 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 78.5% 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

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