CVE-2025-6966 — MEDIUM (5.5)

Q: How severe is CVE-2025-6966?

CVE-2025-6966 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2025-6966?

Check the references section above for vendor advisories and patch information. Affected products include: Ubuntu Python-Apt, Canonical Ubuntu Linux, Debian Debian Linux.

Vulnerability Description

NULL pointer dereference in TagSection.keys() in python-apt on APT-based Linux systems allows a local attacker to cause a denial of service (process crash) via a crafted deb822 file with a malformed non-UTF-8 key.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ubuntu	Python-Apt	< 0.9.3.11
Canonical	Ubuntu Linux	-
Debian	Debian Linux	11.0

Related Weaknesses (CWE)

CWE-476

References

https://bugs.launchpad.net/ubuntu/+source/python-apt/+bug/2091865ExploitIssue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/12/msg00019.htmlMailing ListThird Party Advisory

FAQ

What is CVE-2025-6966?

CVE-2025-6966 is a vulnerability with a CVSS score of 5.5 (MEDIUM). NULL pointer dereference in TagSection.keys() in python-apt on APT-based Linux systems allows a local attacker to cause a denial of service (process crash) via a crafted deb822 file with a malformed n...

How severe is CVE-2025-6966?

CVE-2025-6966 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-6966?

Check the references section above for vendor advisories and patch information. Affected products include: Ubuntu Python-Apt, Canonical Ubuntu Linux, Debian Debian Linux.