PT-2021-2353 · Microsoft · Windows App-V Overlay Filter+1

James Forshaw · Published 2021-03-09 · Updated 2026-03-10 · CVE-2021-26860

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows App-V Overlay Filter (affected versions not specified)

Description The issue is related to insecure privilege management in the Windows App-V Overlay Filter component. It allows attackers to elevate their privileges, potentially affecting the system. No information is provided about the estimated number of potentially affected devices worldwide or real-world incidents where this issue was exploited.

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

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

BDU:2021-01591

CVE-2021-26860

Affected Products

Windows

Windows App-V Overlay Filter

References · 10

• https://osv.dev/vulnerability/CVE-2021-26860 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26860 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-26860 · Security Note
• https://bdu.fstec.ru/vul/2021-01591 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-26860 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26860 · Vendor Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26860 · Vendor Advisory
• https://t.me/cvenotify/11473 · Telegram Post
• https://t.me/cvenotify/65764 · Telegram Post
• https://t.me/cvenotify/11173 · Telegram Post