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CVE-2011-4603

MEDIUM · CVSS 5.0EPSS 3.6%EU EUVD

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

Key facts

CVSS score
5.0 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE)
CWE-20
EPSS score
3.6% (90th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-4527)
Published
December 17, 2011
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4527 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin
  • pidgin / pidgin

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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