CVE-2009-2509

Windows Server 2003 vulnerability

CVSS

9.0

EPSS

17.1%

EPSS pct

97th

Exploited

No known

Active Directory Federation Services (ADFS) in Microsoft Windows Server 2003 SP2 and Server 2008 Gold and SP2 does not properly validate headers in HTTP requests, which allows remote authenticated users to execute arbitrary code via a crafted request to an IIS web server, aka "Remote Code Execution in ADFS Vulnerability."

Affected vendor

Microsoft

Affected product

Windows Server 2003

CVSS vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2009-12-09

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring single-factor authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 17.1% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2009-2509

Confirm whether Microsoft Windows Server 2003 is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2009-2509.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-2509

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2009-2509 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2009-2509?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2009-2509.

Start free scan

No credit card. Agentless.

Related vulnerabilities