Home/CVE/When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file
CVE

CVE-2025-13837

When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file

When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues.

MEDIUM · CVSS 5.5 EPSS 0.00031
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

3
python< 3.13.10
python>= 3.14.0 and < 3.14.1
pythonall versions
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighPython Reverse Shell Execution Via PTY And Socket Modules
producthighInline Python Execution - Spawn Shell Via OS System Library
producthighPython One-Liners with Base64 Decoding - Linux
producthighPython Function Execution Security Warning Disabled In Excel
producthighPython One-Liners with Base64 Decoding
producthighPython Spawning Pretty TTY on Windows
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cna@python.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Dec 2025 · 06:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

30
rhsaRHSA-2026:21275Critical
suse-csafSUSE-SU-2026:1349-1
rhsaRHSA-2026:8824Moderate
rhsaRHSA-2026:8822Moderate
rhsaRHSA-2026:7443Moderate
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/python/cpython/commit/568342cfc8f002d9a15f30238f26b9d2e0e79036
https://github.com/python/cpython/commit/5a8b19677d818fb41ee55f310233772e15aa1a2bPatch
https://github.com/python/cpython/commit/694922cf40aa3a28f898b5f5ee08b71b4922df70Patch
https://github.com/python/cpython/commit/71fa8eb8233b37f16c88b6e3e583b461b205d1baPatch
https://github.com/python/cpython/commit/b64441e4852383645af5b435411a6f849dd1b4cbPatch
https://github.com/python/cpython/commit/cefee7d118a26ef6cd43db59bb9d98ca9a331111
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