PT-2026-47907 · Microsoft · Windows

CVE-2026-42981 · Published 2026-06-09 · Updated 2026-06-10

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft Windows (affected versions not specified)

Description An integer underflow (wrap or wraparound) in Windows Performance Monitor allows an unauthorized attacker to execute code over a network. Integer underflow occurs when an arithmetic operation results in a value smaller than the minimum representable value for that data type, causing it to wrap around to a very large positive number.

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

DoS

RCE

Integer Underflow

Use After Free

Weakness Enumeration

CWE-191

CWE-416

Related Identifiers

BDU:2026-08206

CVE-2026-42981

Affected Products

Windows

References · 8

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42981 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-08206 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42981 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-42981 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42981 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/733216 · Security Note
• https://twitter.com/vuldb/status/2064401431436882342 · Twitter Post
• https://twitter.com/windowsforum/status/2064541675997831502 · Twitter Post