Is CVE-2026-44028 actively exploited?

No active exploitation of CVE-2026-44028 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44028 be exploited remotely?

No. CVE-2026-44028 requires local access to exploit.

What is the CVSS score of CVE-2026-44028?

CVE-2026-44028 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-44028

HIGH

CVE-2026-44028

CWE-674Published: May 5, 2026· Updated: May 9, 2026

7.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.3th

Official Description

An issue was discovered in Nix before 2.34.7 and Lix before 2.95.2. Unbounded recursion in the NAR (Nix Archive) parser could lead to a stack-to-heap overflow when the parser is run on a coroutine stack. The stack is allocated without a guard page, which means that a stack overflow could overwrite memory on the heap and could allow arbitrary code execution as the Nix daemon (run as root in multi-user installations) if ASLR hardening is bypassed. This can be exploited by all users able to connect to the daemon (e.g., in Nix, this is configurable via the allowed-users setting, defaulting to all users). The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 for Nix (introduced in 2.24.4); and 2.95.2, 2.94.2, and 2.93.4 for Lix (introduced in 2.93.0).

NVD Source

Technical Analysis

CVE-2026-44028 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.