{"id":"CVE-2025-50461","aliases":["EUVD-2025-25170","GHSA-xhf5-3r9v-mm67"],"status":"published","title":"A deserialization vulnerability exists in Volcengine's verl 3.0.0, specifically in the scripts...","description":"A deserialization vulnerability exists in Volcengine's verl 3.0.0, specifically in the scripts/model_merger.py script when using the \"fsdp\" backend. The script calls torch.load() with weights_only=False on user-supplied .pt files, allowing attackers to execute arbitrary code if a maliciously crafted model file is loaded. An attacker can exploit this by convincing a victim to download and place a malicious model file in a local directory with a specific filename pattern. This vulnerability may lead to arbitrary code execution with the privileges of the user running the script.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00557,"percentile":0.4674,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-77"],"published":"2025-08-19T00:00:00Z","modified":"2026-06-17T09:35:04Z","exploits":[{"source":"pocgithub","id":"Anchor0221/CVE-2025-50461","title":"Anchor0221/CVE-2025-50461","date":"2025-08-15","url":"https://github.com/Anchor0221/CVE-2025-50461"}],"references":[{"url":"https://pytorch.org/docs/stable/generated/torch.load.html"},{"url":"https://github.com/volcengine/verl"},{"url":"https://github.com/volcengine/verl/blob/main/scripts/model_merger.py#L152"},{"url":"https://github.com/pytorch/pytorch/blob/main/SECURITY.md#loading-untrusted-data"},{"url":"https://github.com/Anchor0221/CVE-2025-50461"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-50461"},{"url":"https://github.com/advisories/GHSA-xhf5-3r9v-mm67"}],"sources":{"cve":[{"id":"CVE-2025-50461","description":"A deserialization vulnerability exists in Volcengine's verl 3.0.0, specifically in the scripts/model_merger.py script when using the \"fsdp\" backend. The script calls torch.load() with weights_only=False on user-supplied .pt files, allowing attackers to execute arbitrary code if a maliciously crafted model file is loaded. An attacker can exploit this by convincing a victim to download and place a malicious model file in a local directory with a specific filename pattern. This vulnerability may lead to arbitrary code execution with the privileges of the user running the script.","status":"published","published":"2025-08-19T00:00:00Z","modified":"2025-08-19T19:44:17.392Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:32:52.526476Z"}],"euvd":[{"id":"EUVD-2025-25170","description":"A deserialization vulnerability exists in Volcengine's verl 3.0.0, specifically in the scripts/model_merger.py script when using the \"fsdp\" backend. The script calls torch.load() with weights_only=False on user-supplied .pt files, allowing attackers to execute arbitrary code if a maliciously crafted model file is loaded. An attacker can exploit this by convincing a victim to download and place a malicious model file in a local directory with a specific filename pattern. This vulnerability may lead to arbitrary code execution with the privileges of the user running the script.","status":"published","published":"2025-08-19T00:00:00Z","modified":"2025-08-19T19:44:17Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:31:55.90596Z"}],"ghsa":[{"id":"GHSA-xhf5-3r9v-mm67","title":"A deserialization vulnerability exists in Volcengine's verl 3.0.0, specifically in the scripts...","description":"A deserialization vulnerability exists in Volcengine's verl 3.0.0, specifically in the scripts/model_merger.py script when using the \"fsdp\" backend. The script calls torch.load() with weights_only=False on user-supplied .pt files, allowing attackers to execute arbitrary code if a maliciously crafted model file is loaded. An attacker can exploit this by convincing a victim to download and place a malicious model file in a local directory with a specific filename pattern. This vulnerability may lead to arbitrary code execution with the privileges of the user running the script.","status":"published","published":"2025-08-19T15:31:29Z","modified":"2025-08-19T21:31:44Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T15:03:20.338761Z"}],"nvd":[{"id":"CVE-2025-50461","description":"A deserialization vulnerability exists in Volcengine's verl 3.0.0, specifically in the scripts/model_merger.py script when using the \"fsdp\" backend. The script calls torch.load() with weights_only=False on user-supplied .pt files, allowing attackers to execute arbitrary code if a maliciously crafted model file is loaded. An attacker can exploit this by convincing a victim to download and place a malicious model file in a local directory with a specific filename pattern. This vulnerability may lead to arbitrary code execution with the privileges of the user running the script.","status":"published","published":"2025-08-19T14:15:39.533Z","modified":"2026-06-17T09:35:04.997Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:11:24.730342Z"}]}}