Vulnerability · Published Apr 2, 2025 · Assigned by VulDB
CVE-2025-3121PyTorch torch.jit.jit_module_from_flatbuffer memory corruption
Low 3.3
In plain English
A low-severity memory corruption in PyTorch. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.3%top 79.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability classified as problematic has been found in PyTorch 2.6.0. Affected is the function torch.jit.jit_module_from_flatbuffer. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | pytorch | no fix listed | DEBIAN-CVE-2025-3121 |
| Debian:13 | pytorch | no fix listed | DEBIAN-CVE-2025-3121 |
| Debian:14 | pytorch | no fix listed | DEBIAN-CVE-2025-3121 |
| PyPI | torch | no fix listed | PYSEC-2025-196 |
| Ubuntu:22.04:LTS | pytorch | no fix listed | UBUNTU-CVE-2025-3121 |
| Ubuntu:25.10 | pytorch | no fix listed | UBUNTU-CVE-2025-3121 |
| Ubuntu:26.04:LTS | pytorch | no fix listed | UBUNTU-CVE-2025-3121 |
| Ubuntu:26.10 | pytorch | no fix listed | UBUNTU-CVE-2025-3121 |
Affected products (as reported)
Weakness: CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
References
- VDB-303012 | PyTorch torch.jit.jit_module_from_flatbuffer memory corruption vdb-entry, technical-description
- VDB-303012 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #525049 | pytorch pytorch (in torch.jit.jit_module_from_flatbuffer) torch 2.6.0 Memory Leak third-party-advisory
- https://github.com/pytorch/pytorch/issues/149800 issue-tracking
- https://github.com/pytorch/pytorch/issues/149800#issue-2940240700 exploit, issue-tracking