CVE-2026-43629

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-07. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

llama.cpp builds b4882 through b9058 contain a heap buffer overflow vulnerability in the KV cache state restore path where the state_read_data() function computes write size without overflow checking, allowing attackers with write access to the slot_save_path directory to corrupt heap memory. Attackers can craft malicious state files where cell_count multiplication overflows or exceeds tensor buffer allocation to write attacker-controlled bytes past buffer boundaries, potentially resulting in heap metadata corruption, model weight corruption, or arbitrary code execution via function pointer overwrite.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
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-2026-43629(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 23× in last 7d / 108× 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 181 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43629?
CVE-2026-43629 is a high vulnerability published on August 6, 2026. llama.cpp builds b4882 through b9058 contain a heap buffer overflow vulnerability in the KV cache state restore path where the statereaddata() function computes write size without overflow checking, allowing attackers with write access to the slotsavepath directory to corrupt heap memory. Attackers…
When was CVE-2026-43629 disclosed?
CVE-2026-43629 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-2026-43629 actively exploited?
CVE-2026-43629 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.7% of all scored CVEs.
What is the CVSS score of CVE-2026-43629?
CVE-2026-43629 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-43629?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43629, 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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