CVE-2026-2781

Integer overflow in the Libraries component in NSS

High · published February 24, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
50.1
In the wild
Unconfirmed
What it is

Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, Thunderbird 140.8, and Firefox ESR 115.35.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00641 · 50.1th percentile
Published
2026-02-24T13:33Z
EPSS history
Timeline
  • 24 FEB 13:33Z
    Integer overflow in the Libraries component in NSS
    cvelistv5