CVE-2026-43630

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-07. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

llama.cpp builds b5702 through b7653 contain an out-of-bounds read vulnerability in the recurrent memory state restore path that allows attackers with write access to the slot save directory to read memory past the end of the allocated cells array. Attackers can craft a malicious slot file with an oversized seq_id value to trigger an out-of-bounds read that leaks heap data including pointer values into server logs, defeating ASLR protections and facilitating further exploitation.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100CISA SSVC

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
Severity65% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 6, 2026

Last Modified

September 21, 2026

Advisory Details (3)

Auto-updated Aug 6, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit f93c09e26730 (ggml-org/llama.cpp)

Fix landed in ggml-org/llama.cpp commit f93c09e26730 — awaiting tagged release

https://github.com/ggml-org/llama.cpp/commit/f93c09e2673090b59802f2552848a1cac70598b0
generic

GitHub - ggml-org/llama.cpp: LLM inference in C/C++ · GitHub

https://github.com/ggml-org/llama.cpp
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-2026-43630(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 rangeFix by version rangeDependents
llama.cpp5151+dfsg-1~exp2 ... 8461+dfsg-1 (26 versions)
  • every version up to 8611+dfsg-1: fixed in 8611+dfsg-1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 65× 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 154 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-43630?
CVE-2026-43630 is a medium vulnerability published on August 6, 2026. llama.cpp builds b5702 through b7653 contain an out-of-bounds read vulnerability in the recurrent memory state restore path that allows attackers with write access to the slot save directory to read memory past the end of the allocated cells array. Attackers can craft a malicious slot file with an…
When was CVE-2026-43630 disclosed?
CVE-2026-43630 was first published on August 6, 2026, with the most recent update on September 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43630 actively exploited?
CVE-2026-43630 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43630?
CVE-2026-43630 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-43630?
An upstream fix for CVE-2026-43630 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-43630 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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