PT-2026-55616 · Microsoft · Edge

Kugelblitz · Published 2026-07-03 · Updated 2026-07-04 · CVE-2026-57981

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Microsoft Edge (Chromium-based) (affected versions not specified)

Description A use after free issue exists that allows an unauthorized attacker to execute arbitrary code over a network. Use after free is a memory corruption flaw that occurs when an application continues to use a pointer after it has been freed, which can be exploited to redirect program execution.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-57981

Affected Products

Edge

References · 3

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57981 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-57981 · Security Note
• https://twitter.com/vuldb/status/2073259306657730762 · Twitter Post