CVE-2026-74539

HIGHPre-NVD 8.08.0—
EchelonGraph scoreHIGH confidence

Score 8.0 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 8.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
8.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.0Exploit: 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:

Bluetooth: ISO: lock sk in iso_sock_getname

Accessing iso_pi(sk)->conn requires lock_sock, which is not held here.

Fix by adding the lock/release.

CVSS v3
8.0
EG Score
8.0(high)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity80% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
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

Bluetooth: ISO: lock sk in iso_sock_getname - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/89cf154d7c18e6e94a3da83051f3cf2bac317ae2
generic

Bluetooth: ISO: lock sk in iso_sock_getname - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/72d5bb1d77d7c3330146dc0cfd43f704c64b9594
generic

Bluetooth: ISO: lock sk in iso_sock_getname - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/202670e6602e068558c1fca2df40719ee91a2906

Vendor Advisories for CVE-2026-74539(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 29× in last 7d / 29× 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 01:49 UTCEG score recompute
  2. 2026-08-21 01:49 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:47 UTCGHSA enrichment
  5. 2026-08-19 23:44 UTCEG score recompute
  6. 2026-08-19 23:44 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 10:40 UTCGHSA enrichment
  9. 2026-08-18 21:37 UTCEG score recompute
  10. 2026-08-18 21:37 UTCGHSA enrichment
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 08:32 UTCGHSA enrichment
  14. 2026-08-17 19:29 UTCEG score recompute
  15. 2026-08-17 19:29 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 06:24 UTCEG score recompute
  18. 2026-08-17 06:24 UTCGHSA enrichment
  19. 2026-08-17 05:54 UTCEG score recompute▲ 8.00
  20. 2026-08-17 05:54 UTCGHSA enrichment
  21. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 8 · severity → HIGH
  22. 2026-08-17 05:39 UTCEG score recompute
  23. 2026-08-17 05:39 UTCGHSA enrichment
  24. 2026-08-17 05:39 UTCMITRE cvelistV5
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 4 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-15 13:27 UTCNVD update
  3. 2026-08-15 12:38 UTCEG score recompute
  4. 2026-08-15 12:37 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74539?
CVE-2026-74539 is a high vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: lock sk in isosockgetname Accessing isopi(sk)->conn requires locksock, which is not held here. Fix by adding the lock/release.
When was CVE-2026-74539 disclosed?
CVE-2026-74539 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-2026-74539 actively exploited?
CVE-2026-74539 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 83.5% of all scored CVEs.
What is the CVSS score of CVE-2026-74539?
CVE-2026-74539 has a CVSS v3 base score of 8.0 (NVD).
How do I remediate CVE-2026-74539?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74539, 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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