CVE-2025-64343 (conda) Constructor: Excessive permissions during and after installation
Local attackers can modify conda installations due to excessive directory permissions inherited from parent folders, potentially leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-64343?
CVE-2025-64343 is a high-severity vulnerability in conda constructor, published on 7 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
(conda) Constructor is a tool that enables users to create installers for conda package collections. In versions 3.12.2 and below, the installation directory inherits permissions from its parent directory. Outside of restricted directories, the permissions are very permissive and often allow write access by authenticated users. Any logged in user can make modifications during the installation for both single-user and all-user installations. This constitutes a local attack vector if the installation is in a directory local users have access to. For single-user installations in a shared directory, these permissions persist after the installation. This issue is fixed in version 3.13.0.
Weakness: CWE-289
Which versions are affected by CVE-2025-64343?
How do I fix CVE-2025-64343?
No fix has been published for CVE-2025-64343 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-64343 being exploited?
There is no known exploitation of CVE-2025-64343 in the wild and no public exploit code.
Sources
Also known as GHSA-vvpr-2qg4-2mrq.