CVE-2026-70639

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory published 2026-08-07. the CNA's CVSS baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
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%CVSS: 5.5Exploit: None knownExposed: 0

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

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
5.5(high)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 14, 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 rangeFixed inDependents
llama.cpp5151+dfsg-1~exp2 ... 6641+dfsg-3 (19 versions)7593+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 51× 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. 2026-08-21 05:22 UTCEG score recompute
  2. 2026-08-21 05:22 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 03:23 UTCEG score recompute
  5. 2026-08-20 03:23 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 01:11 UTCEG score recompute
  8. 2026-08-19 01:11 UTCGHSA enrichment
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-17 23:09 UTCEG score recompute
  12. 2026-08-17 23:09 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-16 21:09 UTCEG score recompute
  15. 2026-08-16 21:09 UTCGHSA enrichment
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 02:15 UTCEPSS rescore
  19. 2026-08-15 19:10 UTCEG score recompute
  20. 2026-08-15 19:10 UTCGHSA enrichment
  21. 2026-08-15 01:31 UTCEPSS rescore
  22. 2026-08-14 17:10 UTCEG score recompute
  23. 2026-08-14 17:10 UTCGHSA enrichment
  24. 2026-08-14 07:24 UTCEG score recompute
  25. 2026-08-14 07:24 UTCGHSA enrichment
Show 26 more
  1. 2026-08-13 22:00 UTCEPSS rescore
  2. 2026-08-13 05:24 UTCEG score recompute
  3. 2026-08-13 05:24 UTCGHSA enrichment
  4. 2026-08-12 13:51 UTCEPSS rescore
  5. 2026-08-12 03:25 UTCEG score recompute
  6. 2026-08-12 03:25 UTCGHSA enrichment
  7. 2026-08-11 01:25 UTCEG score recompute
  8. 2026-08-11 01:25 UTCGHSA enrichment
  9. 2026-08-11 00:00 UTCEPSS rescore
  10. 2026-08-09 23:27 UTCEG score recompute
  11. 2026-08-09 23:27 UTCGHSA enrichment
  12. 2026-08-09 13:47 UTCEPSS rescore
  13. 2026-08-08 21:28 UTCEG score recompute
  14. 2026-08-08 21:28 UTCGHSA enrichment
  15. 2026-08-08 16:37 UTCEPSS rescore
  16. 2026-08-07 19:29 UTCEG score recompute
  17. 2026-08-07 19:29 UTCGHSA enrichment
  18. 2026-08-07 19:12 UTCEG score recompute
  19. 2026-08-07 19:12 UTCGHSA enrichment
  20. 2026-08-07 18:27 UTCEG score recompute
  21. 2026-08-07 18:27 UTCGHSA enrichment
  22. 2026-08-07 17:28 UTCEG score recompute
  23. 2026-08-07 17:28 UTCGHSA enrichment
  24. 2026-08-06 22:38 UTCEG score recompute
  25. 2026-08-06 22:18 UTCEG score recompute
  26. 2026-08-06 22:15 UTCMITRE cvelistV5first tracked

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 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-2026-70639 actively exploited?
CVE-2026-70639 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 96.9% of all scored CVEs.
What is the CVSS score of CVE-2026-70639?
CVE-2026-70639 has a CVSS v4.0 base score of 5.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-70639?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70639, 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-2026-70639

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