SB2026100661 - Use-after-free in Microsoft Edge
Published: October 6, 2026
Security Bulletin ID
SB2026100661
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-88097)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when handling HTML content. A remote attacker can escape browser sandbox and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.