CVE-2026-70639

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-08-07. A secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

llama.cpp builds b1886 through b7445 contain a null pointer dereference vulnerability in the LLaMA-Android JNI wrapper where the bench_1model() function fails to validate the model context pointer before dereferencing it. Attackers can supply a malicious, corrupt, or truncated model file to trigger a null context condition, causing a SIGSEGV crash that terminates the Android application process and results in denial of service.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100CISA 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
8th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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
Patch available. Sources: github_commit, github_release.
github_release Patch Available

b7446

Patch available: ggml-org/llama.cpp b7446

https://github.com/ggml-org/llama.cpp/releases/tag/b7446
github_commit

commit 5c0d18881e0e (ggml-org/llama.cpp)

Fix landed in ggml-org/llama.cpp commit 5c0d18881e0e — awaiting tagged release

https://github.com/ggml-org/llama.cpp/commit/5c0d18881e0e9794c96b2602736b758bac9d9388
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-2026-70639(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 ... 6641+dfsg-3 (19 versions)
  • every version up to 7593+dfsg-1: fixed in 7593+dfsg-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 64× 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 151 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 14:26 UTCEPSS rescore
  7. 2026-10-02 17:56 UTCEPSS rescore
  8. 2026-10-02 09:40 UTCEG score recompute
  9. 2026-10-02 09:40 UTCGHSA enrichment
  10. 2026-10-01 19:50 UTCEPSS rescore
  11. 2026-10-01 01:44 UTCEG score recompute
  12. 2026-10-01 01:44 UTCGHSA enrichment
  13. 2026-09-30 15:03 UTCEPSS rescore
  14. 2026-09-29 05:54 UTCEG score recompute
  15. 2026-09-29 05:54 UTCGHSA enrichment
  16. 2026-09-28 13:52 UTCEPSS rescore
  17. 2026-09-27 17:30 UTCEG score recompute
  18. 2026-09-27 17:30 UTCGHSA enrichment
  19. 2026-09-27 13:48 UTCEPSS rescore
  20. 2026-09-26 15:59 UTCEPSS rescore
  21. 2026-09-25 04:22 UTCEG score recompute
  22. 2026-09-25 04:22 UTCGHSA enrichment
  23. 2026-09-23 23:39 UTCEG score recompute
  24. 2026-09-23 23:39 UTCGHSA enrichment
  25. 2026-09-23 17:54 UTCEPSS rescore
Show 75 more
  1. 2026-09-22 21:21 UTCEG score recompute
  2. 2026-09-22 21:21 UTCGHSA enrichment
  3. 2026-09-21 21:09 UTCEPSS rescore
  4. 2026-09-21 18:17 UTCGHSA enrichment
  5. 2026-09-20 20:36 UTCEG score recompute
  6. 2026-09-20 20:36 UTCGHSA enrichment
  7. 2026-09-20 20:16 UTCEPSS rescore
  8. 2026-09-19 13:01 UTCEG score recompute
  9. 2026-09-19 13:01 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 07:09 UTCGHSA enrichment
  12. 2026-09-17 05:09 UTCEG score recompute
  13. 2026-09-17 05:09 UTCGHSA enrichment
  14. 2026-09-16 14:08 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 03:09 UTCEG score recompute
  17. 2026-09-16 03:09 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 01:10 UTCGHSA enrichment
  20. 2026-09-13 18:31 UTCEG score recompute
  21. 2026-09-13 18:31 UTCGHSA enrichment
  22. 2026-09-12 16:32 UTCEG score recompute
  23. 2026-09-12 16:32 UTCGHSA enrichment
  24. 2026-09-12 15:02 UTCEPSS rescore
  25. 2026-09-11 14:53 UTCEPSS rescore
  26. 2026-09-11 14:32 UTCEG score recompute
  27. 2026-09-11 14:32 UTCGHSA enrichment
  28. 2026-09-10 09:35 UTCEPSS rescore
  29. 2026-09-10 08:08 UTCGHSA enrichment
  30. 2026-09-09 06:09 UTCEG score recompute
  31. 2026-09-09 06:09 UTCGHSA enrichment
  32. 2026-09-08 22:01 UTCEPSS rescore
  33. 2026-09-07 17:57 UTCEG score recompute
  34. 2026-09-07 17:57 UTCGHSA enrichment
  35. 2026-09-07 16:01 UTCEPSS rescore
  36. 2026-09-06 13:47 UTCEPSS rescore
  37. 2026-09-06 13:15 UTCEG score recompute
  38. 2026-09-06 13:15 UTCGHSA enrichment
  39. 2026-09-05 15:31 UTCEPSS rescore
  40. 2026-09-05 11:16 UTCEG score recompute
  41. 2026-09-05 11:16 UTCGHSA enrichment
  42. 2026-09-04 09:12 UTCEG score recompute
  43. 2026-09-04 09:12 UTCGHSA enrichment
  44. 2026-09-04 05:07 UTCEPSS rescore
  45. 2026-09-03 06:15 UTCEG score recompute
  46. 2026-09-03 06:15 UTCGHSA enrichment
  47. 2026-09-02 14:12 UTCEPSS rescore
  48. 2026-09-01 22:45 UTCEG score recompute
  49. 2026-09-01 22:45 UTCGHSA enrichment
  50. 2026-09-01 13:54 UTCEPSS rescore
  51. 2026-09-01 04:40 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 12:43 UTCEG score recompute
  56. 2026-08-30 12:43 UTCGHSA enrichment
  57. 2026-08-30 01:22 UTCEPSS rescore
  58. 2026-08-29 10:41 UTCEG score recompute
  59. 2026-08-29 10:40 UTCGHSA enrichment
  60. 2026-08-28 21:42 UTCEPSS rescore
  61. 2026-08-27 19:51 UTCEG score recompute
  62. 2026-08-27 19:51 UTCGHSA enrichment
  63. 2026-08-26 15:20 UTCEG score recompute
  64. 2026-08-26 15:20 UTCGHSA enrichment
  65. 2026-08-25 13:49 UTCEPSS rescore
  66. 2026-08-25 13:18 UTCEG score recompute
  67. 2026-08-25 13:18 UTCGHSA enrichment
  68. 2026-08-24 11:19 UTCEG score recompute
  69. 2026-08-24 11:19 UTCGHSA enrichment
  70. 2026-08-23 09:20 UTCEG score recompute
  71. 2026-08-23 09:20 UTCGHSA enrichment
  72. 2026-08-23 00:19 UTCEPSS rescore
  73. 2026-08-22 07:21 UTCEG score recompute
  74. 2026-08-22 07:21 UTCGHSA enrichment
  75. 2026-08-21 23:49 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-70639?
CVE-2026-70639 is a medium vulnerability published on August 6, 2026. llama.cpp builds b1886 through b7445 contain a null pointer dereference vulnerability in the LLaMA-Android JNI wrapper where the bench_1model() function fails to validate the model context pointer before dereferencing it. Attackers can supply a malicious, corrupt, or truncated model file to trigger…
When was CVE-2026-70639 disclosed?
CVE-2026-70639 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-2026-70639 actively exploited?
CVE-2026-70639 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70639?
CVE-2026-70639 has a CVSS base score of 5.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70639?
A fix for CVE-2026-70639 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70639 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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