Is CVE-2009-4652 in the CISA KEV catalog?

No. CVE-2009-4652 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-4652?

CVE-2009-4652 has a CVSS v2 base score of 2.6 (LOW).

What is the EPSS score for CVE-2009-4652?

CVE-2009-4652 has an EPSS score of 1.60% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-4652?

Upgrade ngircd on debian 11 to 15-0.1 or later.

CVE & CISA-KEV Catalog

CVE-2009-4652

LOWEPSS 73th pctl

2.6

CVSS v2

NVD

Description

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.

How to fix

Remediation Available

ngircdDebian

Fixed in:15-0.1CVE-2009-4652

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

1.60%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Exploit1

securityfocus.com

Vendor Advisory3

Other references4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.