Threats / Microsoft / CVE-2017-7269
CVE-2017-7269
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Internet Information Services (IIS) vulnerability
Buffer overflow in IIS 6.0 allows remote code execution via malformed PROPFIND requests with long headers, affecting Windows Server 2003 R2.
Verdict
Today item — known-exploited.
A remote attacker can exploit a buffer overflow in the WebDAV handler of IIS 6.0 by sending a specially crafted PROPFIND request. Successful exploitation results in arbitrary code execution with IIS service privileges, enabling full system compromise.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
6 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03).
Probability (EPSS)
EPSS 0.99823 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, Internet Information Services (IIS). Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-119 Memory Buffer Bounds Error — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a PROPFIND HTTP request with an oversized If header containing an HTTP URI scheme to trigger a buffer overflow in the WebDAV implementation.
Business
The organization's web server becomes a pivot point for attackers to establish persistent access and lateral movement within the network infrastructure.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I send the malicious request to the vulnerable IIS 6.0 service listening on the network, causing memory corruption that overwrites the instruction pointer.
Business
Critical business services hosted on affected Windows Server 2003 systems experience unplanned downtime and potential data exfiltration.
3
Lateral reach — past segmentation narrative 3
Attacker
I redirect execution flow to injected shellcode, gaining code execution in the context of the IIS application pool identity.
Business
Attackers obtain unauthorized access to sensitive data, application configurations, and database credentials stored within the web application environment.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05