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CVE-2009-0555

36
FAUCET Score

CVE-2009-0555 describes a critical remote code execution vulnerability in Microsoft Windows Media Runtime, affecting various Windows operating systems and related media components. This flaw allows attackers to execute arbitrary code by tricking users into opening a specially crafted Advanced Systems Format (ASF) audio file utilizing the Windows Media Speech codec. With a CVSS score of 9.3, this vulnerability is highly severe, requiring moderate attack complexity but leading to complete compromise of confidentiality, integrity, and availability. Despite its age and high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:a:microsoft:windows_media_format_runtime:9.0:*:*:*:*:*:*:*
9CPE matchmatch criteria
cpe:2.3:a:microsoft:windows_media_player:9:*:*:*:*:*:*:*
9.5CPE matchmatch criteria
cpe:2.3:a:microsoft:windows_media_format_runtime:9.5:*:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:a:microsoft:windows_media_format_runtime:11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
27.09%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2709 is in the 92nd percentile among its peer group of 8,915 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2009/ms09-051
PatchVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6407
Third Party Advisory
us-cert.gov / cas/techalerts/TA09-286A.html
Third Party AdvisoryUS Government Resource