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CVE-2009-2510

21
FAUCET Score

CVE-2009-2510 is a critical vulnerability in the CryptoAPI component of various Microsoft Windows versions, including Windows 2000 through Windows 7 and Server 2008. It allows man-in-the-middle attackers to spoof SSL servers by exploiting improper handling of a null character in an X.509 certificate's Common Name field. The vulnerability has a CVSS score of 6.8, indicating a medium severity, and could lead to partial confidentiality, integrity, and availability impacts with a network attack vector and medium attack complexity. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) is noted, and community discussion is minimal, its FAUCET Risk Score of 81/100 suggests a notable risk.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:itanium:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:x64:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.32%
Probability of exploitation in next 30 days
EPSS Percentile
91.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0532 is in the 90th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.0 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/ms09-056
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5842
networkworld.com / news/2009/073009-more-holes-found-in-webs.html
networkworld.com / news/2009/091709-microsoft-ie-security-hole.html
securityfocus.com / bid/36475
us-cert.gov / cas/techalerts/TA09-286A.html
US Government Resource
wired.com / threatlevel/2009/07/kaminsky