Heap-Based Buffer Overflow in gmg137 Snap7-rs Client Library
CVE-2025-14673

6.9MEDIUM

Key Information:

Vendor

Gmg137

Status
Snap7-rs
Vendor
CVE Published:
14 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-14673?

A vulnerability has been identified in the gmg137 Snap7-rs library, specifically within the function snap7_rs::client::S7Client::as_ct_write located in /tests/snap7-rs/src/client.rs. This flaw results in a heap-based buffer overflow, which can potentially be exploited by attackers remotely. The issue has been publicly disclosed, raising concerns about its exploitation in the wild. Developers using this version need to apply necessary patches to mitigate potential risks.

Affected Version(s)

snap7-rs 1.142.0

snap7-rs 1.142.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-14673 - Proof of Concept

References

https://vuldb.com/?id.336402
vdb-entrytechnical-description
https://vuldb.com/?ctiid.336402
signaturepermissions-required
https://gitee.com/gmg137/snap7-rs/issues/ID2H74
exploitissue-tracking

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

VulDB Gitee Analyzer
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CVE-2025-14673 : Heap-Based Buffer Overflow in gmg137 Snap7-rs Client Library