Microsoft Windows TS WebProxy Directory Traversal Vulnerability

Added to KEV
2022-05-25
Federal due date
2022-06-15
Vendor
Microsoft
Product
Windows
EPSS
99.7th percentile (score 0.921, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2015-0016

CISA short description

Directory traversal vulnerability in the TS WebProxy (TSWbPrxy) component in Microsoft Windows allows remote attackers to escalate privileges.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.