CVE-2026-80520

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: 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:

ovpn: fix NULL dereference when killing missing key

ovpn_crypto_kill_key assumes both crypto slots are populated and dereferences each slot before checking it. That is not guaranteed: a peer can have only one installed key, and the kill path may be asked to remove a key that is not present.

Read each slot once while holding the crypto state lock, check for NULL before looking at key_id, and only replace the slot that actually matches.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 27, 2026

Advisory Details (3)

Auto-updated Aug 27, 2026
No patch confirmed yet.
generic

ovpn: fix NULL dereference when killing missing key - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/acf32a5dff082044cf0fd9492f3c10b7357c15ee
generic

ovpn: fix NULL dereference when killing missing key - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a47a080d06ee9d94dc6a2da0fc2b9beeeedb92b3
generic

ovpn: fix NULL dereference when killing missing key - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/41d44ac7a61e2f74453af40d4fe1b82af9ea0ada

Vendor Advisories for CVE-2026-80520(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 15× in last 7d / 15× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 18:52 UTCGHSA enrichment
  3. 2026-08-29 06:49 UTCEG score recompute
  4. 2026-08-29 06:49 UTCGHSA enrichment
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-28 18:45 UTCGHSA enrichment
  7. 2026-08-28 06:33 UTCGHSA enrichment
  8. 2026-08-27 18:27 UTCEG score recompute
  9. 2026-08-27 18:27 UTCGHSA enrichment
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-27 06:21 UTCEG score recompute▲ 7.50
  12. 2026-08-27 06:11 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  13. 2026-08-26 15:43 UTCNVD update
  14. 2026-08-26 14:43 UTCEG score recompute
  15. 2026-08-26 14:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80520?
CVE-2026-80520 is a high vulnerability published on August 26, 2026. In the Linux kernel, the following vulnerability has been resolved: ovpn: fix NULL dereference when killing missing key ovpncryptokill_key assumes both crypto slots are populated and dereferences each slot before checking it. That is not guaranteed: a peer can have only one installed key, and the…
When was CVE-2026-80520 disclosed?
CVE-2026-80520 was first published in the National Vulnerability Database on August 26, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80520 actively exploited?
CVE-2026-80520 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 64.1% of all scored CVEs.
What is the CVSS score of CVE-2026-80520?
CVE-2026-80520 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-80520?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80520, 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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