CVE-2026-21065

HIGHNVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory published 2026-08-10. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

Out-of-bounds write in libcodec2secqcelpdec.so prior to SMR Aug-2026 Release 1 allows local attackers to write out-of-bounds memory.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (1)

Auto-updated Aug 10, 2026
No patch confirmed yet.
generic

Samsung Mobile Security

https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=08

Vendor Advisories for CVE-2026-21065(1)

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 29× in last 7d / 46× 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 03:57 UTCEG score recompute
  2. 2026-08-21 03:56 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 15:19 UTCGHSA enrichment
  5. 2026-08-20 02:43 UTCEG score recompute
  6. 2026-08-20 02:43 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-19 14:03 UTCEG score recompute
  9. 2026-08-19 14:03 UTCGHSA enrichment
  10. 2026-08-19 01:20 UTCEG score recompute▲ 3.00
  11. 2026-08-19 01:20 UTCGHSA enrichment
  12. 2026-08-19 01:19 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  13. 2026-08-18 15:34 UTCEG score recompute
  14. 2026-08-18 15:34 UTCGHSA enrichment
  15. 2026-08-18 13:48 UTCEPSS rescore
  16. 2026-08-18 02:54 UTCEG score recompute
  17. 2026-08-18 02:54 UTCGHSA enrichment
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-17 04:50 UTCEG score recompute
  20. 2026-08-17 04:50 UTCGHSA enrichment
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 06:45 UTCEG score recompute
  23. 2026-08-16 06:45 UTCGHSA enrichment
  24. 2026-08-16 02:14 UTCEPSS rescore
  25. 2026-08-15 08:41 UTCEG score recompute
Show 21 more
  1. 2026-08-15 08:41 UTCGHSA enrichment
  2. 2026-08-15 01:30 UTCEPSS rescore
  3. 2026-08-14 10:36 UTCEG score recompute
  4. 2026-08-14 10:36 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 12:31 UTCGHSA enrichment
  7. 2026-08-12 14:27 UTCEG score recompute▲ 0.40
  8. 2026-08-12 14:27 UTCGHSA enrichment
  9. 2026-08-12 14:23 UTCNVD updateCVSS v3 → 4.8 · CVSS v4 → 4.8
  10. 2026-08-12 14:02 UTCEG score recompute▼ 0.40
  11. 2026-08-12 14:02 UTCGHSA enrichment
  12. 2026-08-12 13:58 UTCMITRE cvelistV5CVSS v3 → 4.4 · CVSS v4 → 4.4
  13. 2026-08-12 13:50 UTCEPSS rescore
  14. 2026-08-12 05:37 UTCGHSA enrichment
  15. 2026-08-11 07:24 UTCEG score recompute
  16. 2026-08-11 07:24 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 09:20 UTCEG score recompute▲ 0.40
  19. 2026-08-10 09:19 UTCNVD updateCVSS v3 → 4.8 · CVSS v4 → 4.8
  20. 2026-08-10 08:16 UTCEG score recompute
  21. 2026-08-10 08:16 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-21065?
CVE-2026-21065 is a high vulnerability published on August 10, 2026. Out-of-bounds write in libcodec2secqcelpdec.so prior to SMR Aug-2026 Release 1 allows local attackers to write out-of-bounds memory.
When was CVE-2026-21065 disclosed?
CVE-2026-21065 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21065 actively exploited?
CVE-2026-21065 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 98.4% of all scored CVEs.
What is the CVSS score of CVE-2026-21065?
CVE-2026-21065 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-21065?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21065, 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

Explore the affected products and dependency analysis for CVE-2026-21065

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