CVE-2025-35471: conda-forge openssl-feedstock writable OPENSSLDIR

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-05-13 · updated 2026-06-17
Weakness: CWE-427

Description

conda-forge openssl-feedstock before 066e83c (2024-05-20), on Microsoft Windows, configures OpenSSL to use an OPENSSLDIR file path that can be written to by non-privilged local users. By writing a specially crafted openssl.cnf file in OPENSSLDIR, a non-privileged local user can execute arbitrary code with the privileges of the user or process loading openssl-feedstock DLLs. Miniforge before 24.5.0 is also affected.

Affected products

conda-forge miniforge: before 24.5.0 — fixed in 24.5.0
conda-forge Openssl-Feedstock: before 2024-05-20 — fixed in 2024-05-20

How to fix

Upgrade to a fixed version: conda-forge miniforge 24.5.0; conda-forge Openssl-Feedstock 2024-05-20. Check the vendor advisory for mitigations.

References

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