SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2011-4939

The pidgin_conv_chat_rename_user function in gtkconv.c in Pidgin before 2.10.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by changing a nickname while in an XMPP chat room.

MEDIUM 6.4EPSS 3.51%

Does this matter?

Lower severity and a low EPSS score (3.51%). Track it; it rarely justifies an emergency change on its own.

Description

The pidgin_conv_chat_rename_user function in gtkconv.c in Pidgin before 2.10.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by changing a nickname while in an XMPP chat room.

CVSS 2.0
6.4 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:P
EPSS
3.51% probability · 89th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-264
Affected
pidgin/pidgin
Source
secalert@redhat.com
EPSS trend
0%3%5%26 October 2026: 3.51%26 October 202626 October 2026

EPSS 3.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.