Memory Corruption Vulnerability in PyTorch by Meta
CVE-2025-3121

4.8MEDIUM

Key Information:

Vendor

Meta

Status
Pytorch
Vendor
CVE Published:
2 April 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-3121?

A vulnerability in PyTorch 2.6.0 affects the function torch.jit.jit_module_from_flatbuffer, leading to potential memory corruption. This issue requires local access to exploit and has been publicly disclosed, raising concerns amongst developers. The vulnerability may allow malicious actors to manipulate memory allocations, potentially causing instability or unauthorized access to sensitive data.

Affected Version(s)

PyTorch 2.6.0

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-2025-3121 - Proof of Concept

References

https://vuldb.com/?id.303012
vdb-entrytechnical-description
https://vuldb.com/?ctiid.303012
signaturepermissions-required
https://vuldb.com/?submit.525049
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
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

Default436352 (VulDB User)
.