CVE-2026-16389

CRITICAL

INFO Priority: 0.06 BB Relevance: 80/100

Published: 2026-07-21 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

AV: Network

AC: Low

PR: None

UI: None

S: Unchanged

C: High

I: High

A: High

Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

CWE-190

Vendor	Product	Version
mozilla	firefox	< 153.0.0
mozilla	thunderbird	< 153.0

Vendor Advisory

Vendor Advisory

Permissions Required

80 / 100

✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

9.8 / 10.0 v3.1

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

0.64%

Raw Score 0.006400

Percentile 50.6%

Date 2026-10-29

2026-10-29

0.00640

2026-10-28

0.00640

nvd ref →