AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2023-5173

HIGH · CVSS 7.5 EPSS 0.73%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-09-27 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It affects Firefox.

CVE
CVE-2023-5173
Severity
HIGH
CVSS
7.5
EPSS
0.73%
Firefox

Original NVD Description

In a non-standard configuration of Firefox, an integer overflow could have occurred based on network traffic (possibly under influence of a local unprivileged webpage), leading to an out-of-bounds write to privileged process memory. *This bug only affects Firefox if a non-standard preference allowing non-HTTPS Alternate Services (`network.http.altsvc.oe`) is enabled.* This vulnerability affects Firefox < 118.

Related CVEs

Other vulnerabilities affecting the same vendor(s)