CVE-2025-61622
Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 45.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is vulnerable to remote code execution. Users are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 45.13% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- apache/fory
- Source
- security@apache.org
EPSS moved from 45.1% on 21 October 2026 to 45.1% on 1 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csdIssue Tracking, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/09/29/3Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.