Safari use-after-free may crash the browser (fix 27.2)

high severity · published 2026-10-26

Safari has a use-after-free memory flaw, and processing maliciously crafted web content may lead to an unexpected Safari crash. Apple fixed it in Safari 27.2.

Fixed in: 27.2

CVE: CVE-2026-86986

Source: NVD

Am I affected?

You are affected if the installed version is older than 27.2. Check the version you have and update to 27.2 or later. The fixed version is verified against a vendor or advisory source.

Get the fix

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 547 and your operating system.