Is CVE-2009-5009 in the CISA KEV catalog?

No. CVE-2009-5009 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-5009?

CVE-2009-5009 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2009-5009?

CVE-2009-5009 has an EPSS score of 0.98% (58th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-5009?

Upgrade openconnect on debian 11 to 1.40-1 or later.

CVE & CISA-KEV Catalog

CVE-2009-5009

MEDIUM

5.0

CVSS v2

NVD

Description

Double free vulnerability in OpenConnect before 1.40 might allow remote AnyConnect SSL VPN servers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted DTLS Cipher option during a reconnect operation.

CWE-399Resource Management Errors

How to fix

Remediation Available

openconnectDebian

Fixed in:1.40-1CVE-2009-5009

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

0.98%probability of exploitation in 30 days

58thpercentile

Moderate risk: more likely to be exploited than 58% of all known CVEs.

References

Other references1

infradead.org

Related Vulnerabilities

Other CWE-399 (Resource Management Errors) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-3103	High	10.0	90%	-	-
CVE-2009-0075	High	9.3	85%	-	-
CVE-2005-1790	Low	2.6	83%	-	-
CVE-2010-0806	High	8.8	82%	KEV	-
CVE-2009-2526	High	7.8	82%	-	-
CVE-2015-1868	High	7.8	82%	-	Fix

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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.