CVE-2026-43628

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-07. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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(medium)
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 31, 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 (55 versions)——

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 109× 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.

Showing the most recent 100 of 175 total refreshes for this CVE.

  1. 2026-09-19 13:01 UTCGHSA enrichment
  2. 2026-09-19 00:04 UTCEG score recompute
  3. 2026-09-19 00:04 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 13:12 UTCGHSA enrichment
  6. 2026-09-18 02:06 UTCEG score recompute
  7. 2026-09-18 02:06 UTCGHSA enrichment
  8. 2026-09-17 19:31 UTCEPSS rescore
  9. 2026-09-17 15:15 UTCGHSA enrichment
  10. 2026-09-17 00:58 UTCEG score recompute
  11. 2026-09-17 00:58 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 03:00 UTCGHSA enrichment
  15. 2026-09-15 14:27 UTCEG score recompute
  16. 2026-09-15 14:27 UTCGHSA enrichment
  17. 2026-09-15 01:10 UTCGHSA enrichment
  18. 2026-09-14 08:57 UTCGHSA enrichment
  19. 2026-09-13 22:06 UTCEG score recompute
  20. 2026-09-13 22:06 UTCGHSA enrichment
  21. 2026-09-13 16:47 UTCEPSS rescore
  22. 2026-09-13 11:15 UTCGHSA enrichment
  23. 2026-09-13 00:24 UTCEG score recompute
  24. 2026-09-13 00:24 UTCGHSA enrichment
  25. 2026-09-12 15:01 UTCEPSS rescore
Show 75 more
  1. 2026-09-12 13:32 UTCGHSA enrichment
  2. 2026-09-12 02:41 UTCGHSA enrichment
  3. 2026-09-11 15:49 UTCEG score recompute
  4. 2026-09-11 15:49 UTCGHSA enrichment
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 09:37 UTCEPSS rescore
  7. 2026-09-11 04:43 UTCGHSA enrichment
  8. 2026-09-10 17:44 UTCEG score recompute
  9. 2026-09-10 17:44 UTCGHSA enrichment
  10. 2026-09-10 09:34 UTCEPSS rescore
  11. 2026-09-10 05:44 UTCGHSA enrichment
  12. 2026-09-09 18:53 UTCGHSA enrichment
  13. 2026-09-09 06:09 UTCEG score recompute
  14. 2026-09-09 06:09 UTCGHSA enrichment
  15. 2026-09-08 22:00 UTCEPSS rescore
  16. 2026-09-08 04:49 UTCGHSA enrichment
  17. 2026-09-07 17:57 UTCEG score recompute
  18. 2026-09-07 17:57 UTCGHSA enrichment
  19. 2026-09-07 16:01 UTCEPSS rescore
  20. 2026-09-06 14:06 UTCEG score recompute
  21. 2026-09-06 14:06 UTCGHSA enrichment
  22. 2026-09-06 13:47 UTCEPSS rescore
  23. 2026-09-06 03:15 UTCEG score recompute
  24. 2026-09-06 03:15 UTCGHSA enrichment
  25. 2026-09-05 16:22 UTCEG score recompute
  26. 2026-09-05 16:22 UTCGHSA enrichment
  27. 2026-09-05 03:31 UTCEG score recompute
  28. 2026-09-05 03:31 UTCGHSA enrichment
  29. 2026-09-04 09:12 UTCEG score recompute
  30. 2026-09-04 09:12 UTCGHSA enrichment
  31. 2026-09-04 05:06 UTCEPSS rescore
  32. 2026-09-03 17:19 UTCGHSA enrichment
  33. 2026-09-03 06:15 UTCEG score recompute
  34. 2026-09-03 06:15 UTCGHSA enrichment
  35. 2026-09-02 14:12 UTCEPSS rescore
  36. 2026-09-02 06:56 UTCGHSA enrichment
  37. 2026-09-01 18:33 UTCEG score recompute
  38. 2026-09-01 18:33 UTCGHSA enrichment
  39. 2026-09-01 13:54 UTCEPSS rescore
  40. 2026-09-01 07:41 UTCEG score recompute
  41. 2026-09-01 07:40 UTCGHSA enrichment
  42. 2026-08-31 20:45 UTCEG score recompute
  43. 2026-08-31 20:45 UTCGHSA enrichment
  44. 2026-08-31 06:37 UTCEG score recompute
  45. 2026-08-31 06:37 UTCGHSA enrichment
  46. 2026-08-30 19:17 UTCEPSS rescore
  47. 2026-08-30 19:16 UTCGHSA enrichment
  48. 2026-08-30 08:25 UTCEG score recompute
  49. 2026-08-30 08:25 UTCGHSA enrichment
  50. 2026-08-30 01:22 UTCEPSS rescore
  51. 2026-08-29 21:31 UTCGHSA enrichment
  52. 2026-08-29 10:40 UTCEG score recompute
  53. 2026-08-29 10:40 UTCGHSA enrichment
  54. 2026-08-28 21:41 UTCEPSS rescore
  55. 2026-08-28 12:02 UTCGHSA enrichment
  56. 2026-08-27 21:33 UTCEG score recompute
  57. 2026-08-27 21:33 UTCGHSA enrichment
  58. 2026-08-27 14:25 UTCEPSS rescore
  59. 2026-08-27 10:42 UTCGHSA enrichment
  60. 2026-08-26 23:51 UTCEG score recompute
  61. 2026-08-26 23:51 UTCGHSA enrichment
  62. 2026-08-26 14:46 UTCEPSS rescore
  63. 2026-08-26 12:59 UTCGHSA enrichment
  64. 2026-08-26 02:08 UTCGHSA enrichment
  65. 2026-08-25 15:17 UTCEG score recompute
  66. 2026-08-25 15:17 UTCGHSA enrichment
  67. 2026-08-25 13:49 UTCEPSS rescore
  68. 2026-08-25 04:26 UTCGHSA enrichment
  69. 2026-08-24 17:35 UTCEG score recompute
  70. 2026-08-24 17:35 UTCGHSA enrichment
  71. 2026-08-24 05:19 UTCGHSA enrichment
  72. 2026-08-23 18:28 UTCGHSA enrichment
  73. 2026-08-23 07:37 UTCEG score recompute
  74. 2026-08-23 07:36 UTCGHSA enrichment
  75. 2026-08-23 00:19 UTCEPSS rescore

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 31, 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 v3 base score of 7.8 (NVD).
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

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