Dashboard / CVE-2026-70640

CVE-2026-70640

HIGH
MEDIUM Priority: 0.02 BB Relevance: 40/100
Published: 2026-08-06 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: High
PR: None
UI: Passive
AT: None
VC: High
VI: High
VA: High

Description

llama.cpp builds b1886 through b7445 contain a race condition use-after-free vulnerability in the LLaMA-Android JNI wrapper where bench_1model() and free_1context() lack synchronization, allowing Thread A to operate on freed memory while Thread B concurrently frees the llama_context. Attackers can exploit this by performing heap spray with attacker-controlled data containing a fake vtable to hijack the vtable pointer at offset +0x30, causing llama_batch_allocr::clear() to dereference arbitrary memory and achieve remote code execution.

Weakness Classification (2)

Affected Software (2)

VendorProductVersion
ggml llama.cpp b1886 – b7445
ggml-org llama.cpp b1886

References & Advisories (4)

https://github.com/ggml-org/llama.cpp/releases/tag/b7446
Patch Release Notes Vendor Advisory

Bug Bounty Relevance

40 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.3 / 10.0 v4.0
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.24%
Raw Score 0.002400
Percentile 15.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00240
2026-10-28
0.00240

Intelligence Sources

mitre ref →
nvd ref →

External Links