high severity ยท published 2026-09-29
A privilege escalation flaw in the DLL Services component of Firefox and Thunderbird. The source does not describe the exact impact.
Fixed in: 157.0.0
CVE: CVE-2026-100801
Source: NVD
Fixlane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the Fixlane MCP server and call get_fix_prompt with incident id 199 and your operating system.