Vulnerability · Published Oct 19, 2026 · Assigned by VulDB

CVE-2026-112073Tencent ncnn MatMul matmul.cpp matmul_transb out-of-bounds

Medium 6.3

In plain English

A medium-severity out-of-bounds read in ncnn from Tencent. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.2%top 84.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in Tencent ncnn up to 44b02dabdcf97499281a4692ebd65bad73dcf8b6. Affected by this vulnerability is the function matmul_transb of the file src/layer/matmul.cpp of the component MatMul. The manipulation leads to out-of-bounds read. The attack can be initiated remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
Tencent	ncnn	44b02dabdcf97499281a4692ebd65bad73dcf8b6

Weakness: CWE-125, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C

References

VDB-421752 | Tencent ncnn MatMul matmul.cpp matmul_transb out-of-bounds vdb-entry, technical-description
VDB-421752 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-112073 | CVE Analysis and Report third-party-advisory
Submit #1009476 | Tencent ncnn master 3b7bdba Out-of-Bounds Read third-party-advisory
https://github.com/Tencent/ncnn/issues/7034 exploit, issue-tracking
https://github.com/Tencent/ncnn/ product