Vulnerability details
CVE-2026-90777
espnet ESPnet
ESPnet before 202609 Remote Code Execution via Unsafe Deserialization
CVSS 4.0
8.7High
Official description
ESPnet before 202609 deserializes pretrained model checkpoints using torch.load with weights_only=False, allowing arbitrary code execution from attacker-supplied files. Attackers can craft malicious checkpoint files that execute code during deserialization when loaded through the initialization or fine-tuning path.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| espnet | ESPnet | v < 202609 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://github.com/espnet/espnet/commit/91ca045fc179f29bc7b7fe05cd852aea65310003 patch
- https://github.com/espnet/espnet/blob/v.202511/espnet2/torch_utils/load_pretrained_model.py#L99 technical-description
- https://github.com/espnet/espnet/releases/tag/v.202609 release-notes
- https://github.com/espnet/espnet product
- https://www.vulncheck.com/advisories/espnet-before-202609-remote-code-execution-via-unsafe-deserialization third-party-advisory
- https://github.com/espnet/espnet/security/advisories/GHSA-64f6-3gqc-r926 vendor-advisory
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Details
- Published
- 2026-09-13
- Last updated
- 2026-09-24
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.73%
Probability of exploitation in 30 days
54.5%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-502Deserialization of Untrusted Data