CVE-2009-4652

Exp

The (1) Conn_GetCipherInfo and (2) Conn_UsesSSL functions in src/ngircd/conn.c in ngIRCd 13 and 14, when SSL/TLS support is present and standalone mode is disabled, allow remote attackers to cause a denial of service (application crash) by sending the MOTD command from another server in the same IRC network, possibly related to an array index error.

Published: 2010-02-26 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4652 is rated Exploit Available (51.6/100): CVSS Low severity, with medium exploitation likelihood (EPSS 1.11%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2009-4652

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-4652

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 2025-03-30 1.57% 1.11% -0.46%
2 2025-03-29 1.11% 1.57% +0.46%
3 2025-03-17 — 1.11% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4652

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.6 2.0 LOW
AV:N/AC:H/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:H)
Exploitation requires uncommon or highly specific conditions.
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.
 4.9 2.9 [email protected]

Weakness enumeration for CVE-2009-4652

OS Trackers for CVE-2009-4652

vendor priority summary link
debian not yet assigned CVE-2009-4652 not yet assigned priority: Debian including 1 source packages (ngircd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2009-4652
ubuntu medium CVE-2009-4652 medium priority: Ubuntu including 1 source packages (ngircd), 24 status rows across 24 suites (artful, bionic, cosmic, dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 19, not-affected 3, DNE 1, released 1. https://ubuntu.com/security/CVE-2009-4652

Affected software / configurations for CVE-2009-4652

Vendor Product Version Raw CPE
ngircd ngircd 13 cpe:2.3:a:ngircd:ngircd:13:*:*:*:*:*:*:*
ngircd ngircd 14 cpe:2.3:a:ngircd:ngircd:14:*:*:*:*:*:*:*

References for CVE-2009-4652

cvelogic Threat Intelligence