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CVE-2009-0647

21
FAUCET Score

CVE-2009-0647 describes a denial-of-service vulnerability in Microsoft Windows Live Messenger (WLM) 2009, specifically build 14.0.8064.206 and other 14.0.8064.x builds. Remote attackers can crash the msnmsgr.exe application by sending a specially crafted packet with a modified header, such as a UTF-8.0 value in the Content-Type charset field. This vulnerability has a CVSS score of 5.0 (medium severity) with an attack vector of network, low attack complexity, and a potential impact of application availability (denial of service). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2009CPE matchmatch criteria
cpe:2.3:a:microsoft:windows_live_messenger:2009:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
17.36%
Probability of exploitation in next 30 days
EPSS Percentile
96.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1736 is in the 97th percentile among its peer group of 23,701 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

secunia.com / advisories/33985
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/48810
securityfocus.com / archive/1/501043/100/0/threaded
securityfocus.com / bid/33825
vupen.com / english/advisories/2009/0466
Vendor Advisory