PT-2025-36879 · Microsoft · Windows Defender Firewall+1

K0Shl · Published 2025-09-09 · Updated 2025-09-13 · CVE-2025-54915

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:L/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: Windows Defender Firewall Service (affected versions not specified)

Description: A type confusion issue exists within the Windows Defender Firewall Service. This flaw enables a locally authenticated attacker to gain elevated privileges on the system.

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

Type Confusion

Weakness Enumeration

CWE-843

Related Identifiers

BDU:2025-11016

CVE-2025-54915

Affected Products

Windows

Windows Defender Firewall

References · 9

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54915 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-54915 · Security Note
• https://osv.dev/vulnerability/CVE-2025-54915 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-54915 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-54915 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-11016 · Security Note
• https://reddit.com/r/pwnhub/comments/1nfqpx9/windows_defender_firewall_vulnerabilities_allow · Reddit Post
• https://twitter.com/windowsforum/status/1965489793007005908 · Twitter Post
• https://twitter.com/CVEnew/status/1965509641808609443 · Twitter Post