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CVE-2015-0016: Microsoft Windows TS WebProxy Directory Traversal Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-05-25
• EPSS: 75.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2015-01-13 · updated 2026-06-17
• Weakness: CWE-22

Description

Directory traversal vulnerability in the TS WebProxy (aka TSWbPrxy) component in Microsoft Windows Vista SP2, Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to gain privileges via a crafted pathname in an executable file, as demonstrated by a transition from Low Integrity to Medium Integrity, aka "Directory Traversal Elevation of Privilege Vulnerability."

Affected products

• Microsoft Windows 7: all versions
• Microsoft Windows 8: all versions
• Microsoft Windows 8.1: all versions
• Microsoft Windows Rt: all versions
• Microsoft Windows RT 8.1: all versions
• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows Server 2012: r2
• Microsoft Windows Vista: all versions

References

• http://blog.trendmicro.com/trendlabs-security-intelligence/cve-2015-0016-escaping-the-internet-explorer-sandbox/
• http://packetstormsecurity.com/files/130201/MS15-004-Microsoft-Remote-Desktop-Services-Web-Proxy-IE-Sandbox-Escape.html
• http://secunia.com/advisories/62076
• http://www.exploit-db.com/exploits/35983
• http://www.securityfocus.com/bid/71965
• http://www.securitytracker.com/id/1031524
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-004
• https://exchange.xforce.ibmcloud.com/vulnerabilities/99515
• https://exchange.xforce.ibmcloud.com/vulnerabilities/99516
• http://blog.trendmicro.com/trendlabs-security-intelligence/cve-2015-0016-escaping-the-internet-explorer-sandbox/
• http://packetstormsecurity.com/files/130201/MS15-004-Microsoft-Remote-Desktop-Services-Web-Proxy-IE-Sandbox-Escape.html
• http://secunia.com/advisories/62076

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