CVE-2026-44028

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 7.8% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-05-05 00:30Z4 MO AGO

Last updated

2026-05-09 03:40Z3 MO AGO

Reserved

2026-05-05

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-674Uncontrolled RecursionClass

Data version

5.2

Document digest

645c62bf21b3f09dff8d406651a55563ac57091df1e7b915dd9fb06565b2b2e3

• discourse.nixos.orghttps://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407
• github.comhttps://github.com/NixOS/nix/security/advisories/GHSA-vh5x-56v6-4368
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2026/05/04/33
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2026/05/04/32
• lix.systemshttps://lix.systems/blog/2026-05-05-lix-unsigned-integer-overflow/