AUGUST 4, 2026
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Case File

CVE-2025-10859

MEDIUM · CVSS 4 EPSS 0.11%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-09-30 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.0. It affects Firefox.

CVE
CVE-2025-10859
Severity
MEDIUM
CVSS
4
EPSS
0.11%
Firefox

Original NVD Description

Cookie storage for non-HTML temporary documents was being shared incorrectly with normal browsing content, allowing information from private tabs to escape Incognito mode even after the user closed all tabs. This vulnerability was fixed in Firefox for iOS 143.1.

Related CVEs

Other vulnerabilities affecting the same vendor(s)