Deserialization of untrusted data in Microsoft Edge - CVE-2026-58281
Published: July 15, 2026
Vulnerability identifier: #VU137804
CSH Severity: High
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-58281
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data. A remote attacker can trick the victim into opening a specially crafted web page and execute arbitrary code on the target system.
Affected software
Microsoft Edge
How to mitigate CVE-2026-58281
Install updates from vendor's website.
Microsoft Edge - update to 150.0.4078.48