Is CVE-2009-0758 in the CISA KEV catalog?

No. CVE-2009-0758 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-0758?

CVE-2009-0758 has a CVSS v2 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2009-0758?

CVE-2009-0758 has an EPSS score of 2.01% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-0758?

Upgrade avahi on debian 11 to 0.6.24-3 or later.

CVE & CISA-KEV Catalog

CVE-2009-0758

HIGHEPSS 79th pctl

7.8

CVSS v2

NVD

Description

The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0.6.23 does not account for the network byte order of a port number when processing incoming multicast packets, which allows remote attackers to cause a denial of service (network bandwidth and CPU consumption) via a crafted legacy unicast mDNS query packet that triggers a multicast packet storm.

CWE-399Resource Management Errors

How to fix

Remediation Available

avahiDebian

Fixed in:0.6.24-3CVE-2009-0758

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

2.01%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Other references7

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 2026-04-23.