CVE-2017-7269

CVE-2017-7269 is a critical-severity vulnerability in Microsoft Internet Information Services with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2021-11-03). The underlying weakness is classified as CWE-120.

Key facts

• Severity: Critical (CVSS 3.x base score 9.8)
• CVSS v2: 10.0
• EPSS exploit prediction: 100% (100th percentile)
• Actively exploited: Yes — listed in CISA KEV (added 2021-11-03)
• EU (EUVD) id: EUVD-2017-16299
• EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-11-03)
• Weakness: CWE-120
• Affected product: Microsoft Internet Information Services
• Published: 2017-03-27
• Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2017-7269?

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.

How severe is CVE-2017-7269?

CVE-2017-7269 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-7269 being actively exploited?

Yes. CVE-2017-7269 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2017-7269?

CVE-2017-7269 affects Microsoft Internet Information Services. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-7269?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2017-7269 have an EU (EUVD) identifier?

Yes. CVE-2017-7269 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-16299. It is also flagged as exploited in the EUVD (since 2021-11-03).

When was CVE-2017-7269 published?

CVE-2017-7269 was published on 2017-03-27 and last updated on 2026-06-17.

References

• http://www.securityfocus.com/bid/97127
• http://www.securitytracker.com/id/1038168
• https://0patch.blogspot.com/2017/03/0patching-immortal-cve-2017-7269.html
• https://github.com/danigargu/explodingcan
• https://github.com/edwardz246003/IIS_exploit
• https://github.com/rapid7/metasploit-framework/pull/8162
• https://medium.com/%40iraklis/number-of-internet-facing-vulnerable-iis-6-0-to-cve-2017-7269-8bd153ef5812
• https://support.microsoft.com/en-us/help/3197835/description-of-the-security-update-for-windows-xp-and-windows-server
• https://www.exploit-db.com/exploits/41738/
• https://www.exploit-db.com/exploits/41992/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-7269

Affected products (1)

• cpe:2.3:a:microsoft:internet_information_services:6.0:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Internet Information Services

• CVE-2010-3972 — Critical (CVSS 10.0): Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in ftpsvc.dll in Microsoft FTP Service 7.0…
• CVE-2008-4301 — Critical (CVSS 10.0): A certain ActiveX control in iisext.dll in Microsoft Internet Information Services (IIS) allows remote attackers to set…
• CVE-2007-2815 — Critical (CVSS 10.0): The "hit-highlighting" functionality in webhits.dll in Microsoft Internet Information Services (IIS) Web Server 5.0…
• CVE-2003-0224 — Critical (CVSS 10.0): Buffer overflow in ssinc.dll for Microsoft Internet Information Services (IIS) 5.0 allows local users to execute…
• CVE-1999-0233 — Critical (CVSS 10.0): IIS 1.0 allows users to execute arbitrary commands using .bat or .cmd files.
• CVE-2010-2730 — Critical (CVSS 9.3): Buffer overflow in Microsoft Internet Information Services (IIS) 7.5, when FastCGI is enabled, allows remote attackers…

All CVEs affecting Microsoft Internet Information Services →

Other CWE-120 (Classic Buffer Overflow) vulnerabilities

• CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
• CVE-2026-24823 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT…
• CVE-2026-24810 — Critical (CVSS 10.0): Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules).…
• CVE-2026-24800 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow…
• CVE-2025-9962 — Critical (CVSS 10.0): A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior…
• CVE-2010-10016 — Critical (CVSS 10.0): BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u…

Browse all CWE-120 (Classic Buffer Overflow) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

• 200.71.154.142 (ipv4-addr)
• 190.111.226.20 (ipv4-addr)