CVE-2025-67748
Versions prior to 0.1.6 had a bypass caused by `pty` missing from the block list of unsafe module imports.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 had a bypass caused by `pty` missing from the block list of unsafe module imports. This led to unsafe pickles based on `pty.spawn()` being incorrectly flagged as `LIKELY_SAFE`, and was fixed in version 0.1.6. This impacted any user or system that used Fickling to vet pickle files for security issues.
- CVSS 4.0
- 7.1 HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.27% probability · 19th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-94, CWE-184, CWE-502
- Affected
- trailofbits/fickling
- Source
- security-advisories@github.com
References
- https://github.com/trailofbits/fickling/pull/108Issue Tracking, Patch
- https://github.com/trailofbits/fickling/pull/187Issue Tracking, Patch
- https://github.com/trailofbits/fickling/security/advisories/GHSA-r7v6-mfhq-g3m2Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.