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

Source: https://junglewise.ai/threats/cve-2015-0016-microsoft-windows-ts-webproxy-directory-traversal-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-25. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2015-0016 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-05-25

A directory traversal vulnerability in the TS WebProxy (TSWbPrxy) component of Microsoft Windows allows remote attackers to escalate privileges. By using a crafted pathname in an executable file, an attacker can transition from Low Integrity to Medium Integrity, effectively escaping the Internet Explorer sandbox.

Technologies: [Microsoft Windows](https://junglewise.ai/threats/technologies/windows). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2015-0016 exploited in the wild?** Yes. CVE-2015-0016 is known to be exploited in the wild, first recorded on 25 May 2022. Treat it as urgent.

**How severe is CVE-2015-0016?** Critical severity, with a CVSS score of 7.8, published 25 May 2022.

**Which products and versions are affected?** Microsoft Windows Vista SP2; Microsoft Windows 7 SP1; Microsoft Windows Server 2008 R2 SP1; Microsoft Windows 8 Gold; and 3 more.

**Is there a fix for CVE-2015-0016?** A patch was published on 2015-01-13: Microsoft released updates to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2015-0016 attacked?** It is attacked with local access or over the network, in an operating system.

**Am I affected by CVE-2015-0016?** Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Microsoft Windows Vista SP2
- Microsoft Windows 7 SP1
- Microsoft Windows Server 2008 R2 SP1
- Microsoft Windows 8 Gold
- Microsoft Windows 8.1 -
- Microsoft Windows Server 2012 Gold and R2
- Microsoft Windows RT Gold and 8.1

## Timeline

- 2015-01-13: disclosed: Initial Microsoft security bulletin MS15-004 published
- 2015-01-13: patched: Microsoft released updates to address the vulnerability
- 2022-05-25: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2022-05-25: exploited: Confirmed as exploited in the wild per CISA KEV entry

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