Microsoft · Internet Information Services (IIS)
CVE-2017-7269
Microsoft Windows Server Buffer Overflow Vulnerability
What it is
Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (IIS) 6.0 in Microsoft Windows Server 2003 R2 allows remote attackers to execute arbitrary code via a long header beginning with "If: <http://" in a PROPFIND request, as exploited in the wild in July or August 2016.
CISA: Microsoft Windows Server 2003 R2 contains a buffer overflow vulnerability in Internet Information Services (IIS) 6.0 which allows remote attackers to execute code via a long header beginning with "If: <http://" in a PROPFIND request.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: May 3, 2022
- Added to the CISA list
- November 3, 2021
- Published
- March 27, 2017
- Severity
- Critical 9.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 99.8% in the top 0.1% of all known vulnerabilities
- Weakness
- CWE-119
- More details
- NVD · CVE.org · CISA
All references (10)
- https://www.exploit-db.com/exploits/41992/
- http://www.securityfocus.com/bid/97127
- https://medium.com/%40iraklis/number-of-internet-facing-vulnerable-iis-6-0-to-cve-2017-7269-8bd153ef5812
- https://github.com/rapid7/metasploit-framework/pull/8162
- https://github.com/danigargu/explodingcan
- http://www.securitytracker.com/id/1038168
- https://www.exploit-db.com/exploits/41738/
- https://support.microsoft.com/en-us/help/3197835/description-of-the-security-update-for-windows-xp-and-window…
- https://0patch.blogspot.com/2017/03/0patching-immortal-cve-2017-7269.html
- https://github.com/edwardz246003/IIS_exploit
More exploited flaws from Microsoft
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Oct 13, 2026 | Command Injection | Windows | High 8.8 | 9.8% |
| Sep 25, 2026 | Code Injection | SharePoint | High 8.8 | 8.2% |
| Sep 8, 2026 | Link Following | Windows | High 7.8 | 0.4% |
| Sep 8, 2026 | Heap-Based Buffer Overflow | Windows | High 7.8 | 0.4% |
| Aug 26, 2026 | Remote Code Execution | SQL Server | High 8.8 | 57% |
| Aug 18, 2026 | Double Free | Internet Key Exchange (IKE) Service Extensions | Critical 9.8 | 77% |
| Aug 18, 2026 | Weak Authentication | SharePoint | Critical 9.1 | 70% |
| Aug 11, 2026 | Windows Ancillary Function Driver for WinSock Use-After-Free | Windows Ancillary Function Driver for WinSock | High 7.0 | 0.3% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.