7.5

CVE-2026-110449: nixos nix Integer Overflow or Wraparound

CVSS: 7.5v3.1HighDeferred
AliasesDEBIAN-CVE-2026-110449UBUNTU-CVE-2026-110449
Published 14-10-2026Last modified 14-10-2026
Open JSON

Vulnerability summary

CVE-2026-110449 is a high (CVSS 7.5) Integer Overflow or Wraparound vulnerability in nixos nix. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.25%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-10-2026
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

Nix before 2.35.3 and Lix before 2.95.4 have an integer overflow and resultant out-of-bounds write when evaluating untrusted expressions because list allocation is mishandled.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

14-10-202621-10-2026
EPSS score
0.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • nixAll versions (No fix recorded)
Nixos1 product
  • nix< 2.28.8 | ≥ 2.29.0, < 2.30.6 | ≥ 2.31.0, < 2.31.6 | ≥ 2.32.0, < 2.34.9 | ≥ 2.35.0, < 2.35.3
Ubuntu1 product
  • nixAll versions (No fix recorded)

3 vendors · 3 products

References

4 links