CVE-2025-14673 gmg137 snap7-rs client.rs as_ct_write heap-based overflow
A heap-based buffer overflow in the snap7-rs library allows remote attackers to execute arbitrary code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-14673?
CVE-2025-14673 is a medium-severity memory corruption vulnerability in gmg137 snap7-rs, published on 14 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been found in gmg137 snap7-rs up to 1.142.1. Affected is the function snap7_rs::client::S7Client::as_ct_write of the file /tests/snap7-rs/src/client.rs. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-14673?
It affects 1 product.
Products include Gmg137 Snap7-Rs.
How do I fix CVE-2025-14673?
No fix has been published for CVE-2025-14673 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-14673 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-14673 exists.
Other vulnerabilities in gmg137 snap7-rs
Sources
Also known as GHSA-rw74-fqrf-pr2q.