Vulnerability · Published Dec 30, 2025 · Assigned by VulDB

CVE-2025-15247gmg137 snap7-rs client.rs download heap-based overflow

High 7.3

In plain English

A high-severity heap buffer overflow in snap7-rs from gmg137. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.4%top 61.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in gmg137 snap7-rs up to 153d3e8c16decd7271e2a5b2e3da4d6f68589424. Affected by this issue is the function snap7_rs::client::S7Client::download of the file client.rs. Such manipulation leads to heap-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
gmg137	snap7-rs	153d3e8c16decd7271e2a5b2e3da4d6f68589424

Weakness: CWE-122, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-338637 | gmg137 snap7-rs client.rs download heap-based overflow vdb-entry, technical-description
VDB-338637 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
https://gitee.com/gmg137/snap7-rs/issues/ID2H7V exploit, issue-tracking
https://gitee.com/gmg137/snap7-rs/ product