Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

vulnerability

Gentoo Linux: CVE-2023-5388: Mozilla Network Security Service (NSS): TLS RSA decryption timing attack

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:P)
Published
Aug 6, 2025
Added
Aug 7, 2025
Modified
Mar 31, 2026

Description

NSS was susceptible to a timing side-channel attack when performing RSA decryption. This attack could potentially allow an attacker to recover the private data. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

Solution

gentoo-linux-upgrade-dev-libs-nss
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.