CVE-2026-72278

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreHIGH confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-15. a secondary CVSS source baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Re-translate VNCR before injecting abort

KVM faults in the VNCR page with FOLL_WRITE whenever the guest aborts for a write, similar to how a regular stage-2 mapping is handled. It is entirely possible that the guest reads from the VNCR before writing to it, in which case the PFN could only be read-only.

Invalidate the VNCR TLB and re-fetch the translation upon taking a VNCR abort, allowing the host mapping to be faulted in for write the second time around. Interestingly enough, this also satisfies the ordering requirements of FEAT_ETS2/3 between descriptor updates and MMU faults.

CVSS v3
9.3
EG Score
9.3(high)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (3)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

KVM: arm64: nv: Re-translate VNCR before injecting abort - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ea7a76d7d614b5f82b4d0785f9af3550e860a71a
generic

KVM: arm64: nv: Re-translate VNCR before injecting abort - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f
generic

KVM: arm64: nv: Re-translate VNCR before injecting abort - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0a5dd8cf4d58ea28da132c2097cd1c525302ac48

Vendor Advisories for CVE-2026-72278(1)

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

Data Freshness Timeline

(refreshed 48× in last 7d / 48× 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.

  1. 2026-08-21 05:07 UTCGHSA enrichment
  2. 2026-08-21 01:01 UTCEG score recompute
  3. 2026-08-21 01:01 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 20:57 UTCGHSA enrichment
  6. 2026-08-20 16:52 UTCGHSA enrichment
  7. 2026-08-20 12:47 UTCGHSA enrichment
  8. 2026-08-20 08:39 UTCGHSA enrichment
  9. 2026-08-20 04:34 UTCGHSA enrichment
  10. 2026-08-20 00:29 UTCGHSA enrichment
  11. 2026-08-19 20:24 UTCEG score recompute
  12. 2026-08-19 20:24 UTCGHSA enrichment
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-19 16:17 UTCGHSA enrichment
  15. 2026-08-19 12:00 UTCGHSA enrichment
  16. 2026-08-19 07:55 UTCGHSA enrichment
  17. 2026-08-19 03:50 UTCGHSA enrichment
  18. 2026-08-18 23:46 UTCGHSA enrichment
  19. 2026-08-18 19:40 UTCGHSA enrichment
  20. 2026-08-18 15:35 UTCEG score recompute
  21. 2026-08-18 15:35 UTCGHSA enrichment
  22. 2026-08-18 13:49 UTCEPSS rescore
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 11:24 UTCGHSA enrichment
  25. 2026-08-18 07:19 UTCGHSA enrichment
Show 23 more
  1. 2026-08-18 03:13 UTCGHSA enrichment
  2. 2026-08-17 23:06 UTCGHSA enrichment
  3. 2026-08-17 19:00 UTCGHSA enrichment
  4. 2026-08-17 14:30 UTCEG score recompute
  5. 2026-08-17 14:30 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 10:24 UTCEG score recompute
  8. 2026-08-17 10:24 UTCGHSA enrichment
  9. 2026-08-17 06:20 UTCEG score recompute
  10. 2026-08-17 06:20 UTCGHSA enrichment
  11. 2026-08-17 05:59 UTCEG score recompute▲ 9.30
  12. 2026-08-17 05:59 UTCGHSA enrichment
  13. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 9.3 · severity → CRITICAL
  14. 2026-08-17 05:31 UTCEG score recompute
  15. 2026-08-17 05:31 UTCGHSA enrichment
  16. 2026-08-17 05:24 UTCMITRE cvelistV5
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 02:15 UTCEPSS rescore
  20. 2026-08-15 06:38 UTCGHSA enrichment
  21. 2026-08-15 06:23 UTCNVD update
  22. 2026-08-15 06:08 UTCEG score recompute
  23. 2026-08-15 06:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-72278?
CVE-2026-72278 is a critical vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Re-translate VNCR before injecting abort KVM faults in the VNCR page with FOLL_WRITE whenever the guest aborts for a write, similar to how a regular stage-2 mapping is handled. It is entirely possible that the guest…
When was CVE-2026-72278 disclosed?
CVE-2026-72278 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72278 actively exploited?
CVE-2026-72278 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 90.6% of all scored CVEs.
What is the CVSS score of CVE-2026-72278?
CVE-2026-72278 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-72278?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72278, 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

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