CVE-2025-71323 json
picklescan - Remote Code Execution via Unblocked ctypes Module
published 10mo ago modified yesterday also EUVD-2025-210270 , GHSA-4675-36f9-wf6r , PYSEC-2026-1782
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 62%
- public exploits
- 0
- none known
Summary
picklescan before 0.0.33 fails to block the ctypes module, allowing attackers to achieve remote code execution by invoking direct syscalls and accessing raw memory. Attackers can craft malicious pickle files using ctypes.WinDLL to load kernel32.dll and execute arbitrary commands, bypassing sandbox protections and gadget chain detection.
Patch / fix
- pypi picklescan 0.0.33
- picklescan picklescan 0.0.33
Is CVE-2025-71323 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 4mo ago
Exploit prediction
0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/mmaitre314/picklescan/security/advisories/GHSA-4675-36f9-wf6r referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| OSV | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | picklescan | <0.0.33 |
0.0.33 |
Affected products
- picklescan picklescan
Classification
References
-
github.com
/mmaitre314/picklescan/pull/53
web
-
github.com
/mmaitre314/picklescan/commit/70c1c6c31beb6baaf52c8db1b6c3c0e84a6f9dab
web
-
github.com
/mmaitre314/picklescan/security/advisories/GHSA-4675-36f9-wf6r
vendor-advisory, exploit, web
-
vulncheck.com
/advisories/picklescan-remote-code-execution-via-unblocked-ctypes-module
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2025-71323
advisory
-
github.com
/mmaitre314/picklescan
package
-
github.com
/mmaitre314/picklescan/releases/tag/v0.0.33
web
-
pypi.org
/project/picklescan
package
-
github.com
/advisories/GHSA-4675-36f9-wf6r
advisory
Sources
- CVE List CVE-2025-71323
- GitHub Advisory GHSA-4675-36f9-wf6r
- NVD CVE-2025-71323
- OSV PYSEC-2026-1782
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.