CVE-2009-2703

libpurple/protocols/irc/msgs.c in the IRC protocol plugin in libpurple in Pidgin before 2.6.2 allows remote IRC servers to cause a denial of service (NULL pointer dereference and application crash) via a TOPIC message that lacks a topic string.

Published: 2009-09-08 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-2703 is rated Moderate Risk (48.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.92%). EPSS rose +1.28% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-2703

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.64% 1.92% +1.28%
2 2025-03-30 1.93% 0.64% -1.29%
3 2025-03-29 — 1.93% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-2703

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2009-2703

OS Trackers for CVE-2009-2703

vendor priority summary link
debian low CVE-2009-2703 low priority: Debian including 1 source packages (pidgin), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2009-2703
redhat low — https://access.redhat.com/security/cve/CVE-2009-2703
ubuntu low CVE-2009-2703 low priority: Ubuntu including 1 source packages (pidgin), 6 status rows across 6 suites (dapper, hardy, intrepid, jaunty, karmic, upstream): released 4, DNE 1, not-affected 1. https://ubuntu.com/security/CVE-2009-2703

Affected software / configurations for CVE-2009-2703

Vendor Product Version Raw CPE
pidgin libpurple — cpe:2.3:a:pidgin:libpurple:*:*:*:*:*:*:*:*
pidgin pidgin <= 2.6.1 cpe:2.3:a:pidgin:pidgin:*:*:*:*:*:*:*:*
pidgin pidgin 2.0.0 cpe:2.3:a:pidgin:pidgin:2.0.0:*:*:*:*:*:*:*
pidgin pidgin 2.0.1 cpe:2.3:a:pidgin:pidgin:2.0.1:*:*:*:*:*:*:*
pidgin pidgin 2.0.2 cpe:2.3:a:pidgin:pidgin:2.0.2:*:*:*:*:*:*:*
pidgin pidgin 2.0.2 cpe:2.3:a:pidgin:pidgin:2.0.2:*:linux:*:*:*:*:*
pidgin pidgin 2.1.0 cpe:2.3:a:pidgin:pidgin:2.1.0:*:*:*:*:*:*:*
pidgin pidgin 2.1.1 cpe:2.3:a:pidgin:pidgin:2.1.1:*:*:*:*:*:*:*
pidgin pidgin 2.2.0 cpe:2.3:a:pidgin:pidgin:2.2.0:*:*:*:*:*:*:*
pidgin pidgin 2.2.1 cpe:2.3:a:pidgin:pidgin:2.2.1:*:*:*:*:*:*:*
pidgin pidgin 2.2.2 cpe:2.3:a:pidgin:pidgin:2.2.2:*:*:*:*:*:*:*
pidgin pidgin 2.3.0 cpe:2.3:a:pidgin:pidgin:2.3.0:*:*:*:*:*:*:*
pidgin pidgin 2.3.1 cpe:2.3:a:pidgin:pidgin:2.3.1:*:*:*:*:*:*:*
pidgin pidgin 2.4.0 cpe:2.3:a:pidgin:pidgin:2.4.0:*:*:*:*:*:*:*
pidgin pidgin 2.4.0 cpe:2.3:a:pidgin:pidgin:2.4.0:32_bit:*:*:*:*:*:*
pidgin pidgin 2.4.1 cpe:2.3:a:pidgin:pidgin:2.4.1:*:*:*:*:*:*:*
pidgin pidgin 2.4.1 cpe:2.3:a:pidgin:pidgin:2.4.1:32_bit:*:*:*:*:*:*
pidgin pidgin 2.4.2 cpe:2.3:a:pidgin:pidgin:2.4.2:*:*:*:*:*:*:*
pidgin pidgin 2.4.2 cpe:2.3:a:pidgin:pidgin:2.4.2:32_bit:*:*:*:*:*:*
pidgin pidgin 2.4.3 cpe:2.3:a:pidgin:pidgin:2.4.3:*:*:*:*:*:*:*
pidgin pidgin 2.4.3 cpe:2.3:a:pidgin:pidgin:2.4.3:32_bit:*:*:*:*:*:*
pidgin pidgin 2.5.0 cpe:2.3:a:pidgin:pidgin:2.5.0:*:*:*:*:*:*:*
pidgin pidgin 2.5.0 cpe:2.3:a:pidgin:pidgin:2.5.0:32_bit:*:*:*:*:*:*
pidgin pidgin 2.5.1 cpe:2.3:a:pidgin:pidgin:2.5.1:*:*:*:*:*:*:*
pidgin pidgin 2.5.2 cpe:2.3:a:pidgin:pidgin:2.5.2:*:*:*:*:*:*:*
pidgin pidgin 2.5.2 cpe:2.3:a:pidgin:pidgin:2.5.2:32_bit:*:*:*:*:*:*
pidgin pidgin 2.5.3 cpe:2.3:a:pidgin:pidgin:2.5.3:*:*:*:*:*:*:*
pidgin pidgin 2.5.3 cpe:2.3:a:pidgin:pidgin:2.5.3:32_bit:*:*:*:*:*:*
pidgin pidgin 2.5.4 cpe:2.3:a:pidgin:pidgin:2.5.4:*:*:*:*:*:*:*
pidgin pidgin 2.5.4 cpe:2.3:a:pidgin:pidgin:2.5.4:32_bit:*:*:*:*:*:*
pidgin pidgin 2.5.5 cpe:2.3:a:pidgin:pidgin:2.5.5:*:*:*:*:*:*:*
pidgin pidgin 2.5.5 cpe:2.3:a:pidgin:pidgin:2.5.5:32_bit:*:*:*:*:*:*
pidgin pidgin 2.5.6 cpe:2.3:a:pidgin:pidgin:2.5.6:*:*:*:*:*:*:*
pidgin pidgin 2.5.7 cpe:2.3:a:pidgin:pidgin:2.5.7:*:*:*:*:*:*:*
pidgin pidgin 2.5.8 cpe:2.3:a:pidgin:pidgin:2.5.8:*:*:*:*:*:*:*
pidgin pidgin 2.5.9 cpe:2.3:a:pidgin:pidgin:2.5.9:*:*:*:*:*:*:*
pidgin pidgin 2.6.0 cpe:2.3:a:pidgin:pidgin:2.6.0:*:*:*:*:*:*:*

References for CVE-2009-2703

cvelogic Threat Intelligence