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CVE-2009-0647: microsoft windows_live_messenger Improper Input Validation

CVSS: 5.0v2.0MediumModified
Published 19-02-2009Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2009-0647 is a medium (CVSS 5.0) Improper Input Validation vulnerability in microsoft windows_live_messenger. EPSS estimates a 17.36% chance of exploitation in the next 30 days, higher than 97.1% of scored vulnerabilities.

Overall risk
23/100
0100
Low · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
17.36%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-02-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

msnmsgr.exe in Windows Live Messenger (WLM) 2009 build 14.0.8064.206, and other 14.0.8064.x builds, allows remote attackers to cause a denial of service (application crash) via a modified header in a packet, as possibly demonstrated by a UTF-8.0 value of the charset field in the Content-Type header line. NOTE: this has been reported as a format string vulnerability by some sources, but the provenance of that information is unknown.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

17.36%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

0.00 pp

From 17.36% on 21-09-2026

21-09-202621-10-2026
EPSS score
17.36%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft1 product

1 vendor · 1 product

References

5 links