CVE-2026-43628

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-07. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 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.

llama.cpp builds b3978 through b9058 contain an integer underflow and out-of-bounds read vulnerability in the DRY sampler that allows unauthenticated attackers to trigger a heap buffer underflow by sending a crafted HTTP request with dry_allowed_length set to INT32_MIN to the /v1/completions or /v1/chat/completions endpoints. Attackers can exploit this vulnerability to crash the server with SIGSEGV causing denial of service for all connected users, or corrupt token sampling probabilities by reading garbage values from memory before the allocated buffer.

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
10%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 14, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

GitHub - Vladimir-tokarev-cyera/llama-cpp-security-patches: Security patches for unpatched llama.cpp vulnerabilities (CVE-2026-43626 through CVE-2026-43632) — Cyera Research · GitHub

https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches

Vendor Advisories for CVE-2026-43628(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
llama.cpp10108+dfsg-1 ... 9951+dfsg-3 (50 versions)——

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 31× in last 7d / 66× 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. 2026-08-20 14:25 UTCGHSA enrichment
  2. 2026-08-20 03:34 UTCEG score recompute
  3. 2026-08-20 03:34 UTCGHSA enrichment
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 16:42 UTCGHSA enrichment
  6. 2026-08-19 05:47 UTCGHSA enrichment
  7. 2026-08-18 18:55 UTCEG score recompute
  8. 2026-08-18 18:55 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 08:03 UTCGHSA enrichment
  11. 2026-08-17 21:08 UTCEG score recompute
  12. 2026-08-17 21:07 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 10:16 UTCGHSA enrichment
  15. 2026-08-16 23:26 UTCEG score recompute
  16. 2026-08-16 23:26 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 12:35 UTCEG score recompute
  19. 2026-08-16 12:35 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-16 01:44 UTCGHSA enrichment
  22. 2026-08-15 14:53 UTCGHSA enrichment
  23. 2026-08-15 04:02 UTCEG score recompute
  24. 2026-08-15 04:02 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 41 more
  1. 2026-08-14 17:10 UTCEG score recompute
  2. 2026-08-14 17:10 UTCGHSA enrichment
  3. 2026-08-14 14:22 UTCGHSA enrichment
  4. 2026-08-14 03:31 UTCEG score recompute
  5. 2026-08-14 03:31 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 16:40 UTCGHSA enrichment
  8. 2026-08-13 05:41 UTCGHSA enrichment
  9. 2026-08-12 18:50 UTCEG score recompute
  10. 2026-08-12 18:50 UTCGHSA enrichment
  11. 2026-08-12 13:51 UTCEPSS rescore
  12. 2026-08-12 07:59 UTCGHSA enrichment
  13. 2026-08-11 21:08 UTCEG score recompute
  14. 2026-08-11 21:08 UTCGHSA enrichment
  15. 2026-08-11 13:43 UTCEPSS rescore
  16. 2026-08-11 10:17 UTCEG score recompute
  17. 2026-08-11 10:17 UTCGHSA enrichment
  18. 2026-08-11 00:00 UTCEPSS rescore
  19. 2026-08-10 23:26 UTCGHSA enrichment
  20. 2026-08-10 12:34 UTCGHSA enrichment
  21. 2026-08-10 01:43 UTCGHSA enrichment
  22. 2026-08-09 14:53 UTCEG score recompute
  23. 2026-08-09 14:53 UTCGHSA enrichment
  24. 2026-08-09 13:46 UTCEPSS rescore
  25. 2026-08-09 04:02 UTCGHSA enrichment
  26. 2026-08-08 17:11 UTCEG score recompute
  27. 2026-08-08 17:11 UTCGHSA enrichment
  28. 2026-08-08 16:37 UTCEPSS rescore
  29. 2026-08-08 06:20 UTCGHSA enrichment
  30. 2026-08-07 19:29 UTCEG score recompute
  31. 2026-08-07 19:29 UTCGHSA enrichment
  32. 2026-08-07 19:12 UTCEG score recompute
  33. 2026-08-07 19:12 UTCGHSA enrichment
  34. 2026-08-07 16:22 UTCEG score recompute
  35. 2026-08-07 16:22 UTCGHSA enrichment
  36. 2026-08-07 15:43 UTCEG score recompute
  37. 2026-08-07 15:43 UTCGHSA enrichment
  38. 2026-08-07 09:08 UTCEG score recompute
  39. 2026-08-07 09:08 UTCGHSA enrichment
  40. 2026-08-06 22:18 UTCEG score recompute
  41. 2026-08-06 22:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43628?
CVE-2026-43628 is a high vulnerability published on August 6, 2026. llama.cpp builds b3978 through b9058 contain an integer underflow and out-of-bounds read vulnerability in the DRY sampler that allows unauthenticated attackers to trigger a heap buffer underflow by sending a crafted HTTP request with dryallowedlength set to INT32_MIN to the /v1/completions or…
When was CVE-2026-43628 disclosed?
CVE-2026-43628 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43628 actively exploited?
CVE-2026-43628 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 89.5% of all scored CVEs.
What is the CVSS score of CVE-2026-43628?
CVE-2026-43628 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-43628?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43628, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-43628

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