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: 0.3%CVSS: 7.0Exploit: None knownExposed services: Not assessed

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
7.0HIGHmedium confidence
EG Risk
32
EG Risk 32/100

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%
EPSS PROB
0.3%
EPSS %ILE
19th
KEV
Not listed

Published

May 15, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated May 15, 2026
Patch available.
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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
xen—
  • every version up to 4.18.5-r8: fixed in 4.18.5-r8
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
xen—
  • every version up to 4.19.5-r3: fixed in 4.19.5-r3
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
xen—
  • every version up to 4.20.3-r3: fixed in 4.20.3-r3
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
xen—
  • every version up to 4.20.3-r3: fixed in 4.20.3-r3
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
xen—
  • every version up to 4.21.1-r4: fixed in 4.21.1-r4
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
xen4.14.2+25-gb6a8c4f72d-2 ... 4.20.3+127-gc42374a105-1 (46 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
xen4.17.1+2-gb773c48e36-1 ... 4.17.5+72-g01140da4e8-1 (14 versions)
  • every version up to 4.17.7-0+deb12u1: fixed in 4.17.7-0+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
xen4.20.0+68-g35cb38b222-1 ... 4.20.2+7-g1badcf5035-2 (6 versions)
  • every version up to 4.20.3+127-gc42374a105-0+deb13u1: fixed in 4.20.3+127-gc42374a105-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
xen4.20.0+68-g35cb38b222-1, 4.20.2+37-g61ff35323e-1, 4.20.2+7-g1badcf5035-1, 4.20.2+7-g1badcf5035-2
  • every version up to 4.20.3+127-gc42374a105-1: fixed in 4.20.3+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 5× in last 7d / 35× 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 395 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

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 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 0.3% probability of exploitation in the next 30 days (19th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-54518?
CVE-2025-54518 has a CVSS base score of 7.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-54518?
A fix for CVE-2025-54518 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-54518 are linked in the Vendor Advisories panel on this page.

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