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CVE-2008-5081

62
FAUCET Score

CVE-2008-5081 describes a denial-of-service vulnerability in Avahi before version 0.6.24, specifically within the avahi-daemon component. A remote attacker can crash the service by sending a specially crafted mDNS packet with a source port of 0, triggering an assertion failure. This vulnerability has a CVSS score of 5.0, indicating a medium severity, and is easily exploitable over the network with no authentication required, leading to a complete loss of availability. While not on the KEV catalog, exploit code is publicly available, including a Metasploit module and an ExploitDB entry, suggesting potential for exploitation despite limited community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.6.23CPE matchmatch criteria
cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*
0.1CPE matchmatch criteria
cpe:2.3:a:avahi:avahi:0.1:*:*:*:*:*:*:*
0.2CPE matchmatch criteria
cpe:2.3:a:avahi:avahi:0.2:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:avahi:avahi:0.3:*:*:*:*:*:*:*
0.4CPE matchmatch criteria
cpe:2.3:a:avahi:avahi:0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
59.22%
Probability of exploitation in next 30 days
EPSS Percentile
99.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Avahi Source Port 0 DoS · Nov 14, 2008
ExploitDB: EDB-7520 · Dec 19, 2008
This CVE's current EPSS score of 0.5922 is in the 99th percentile among its peer group of 23,690 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: avahi-0:0.6.16-1.el5_2.1
View patch

Vendor Advisories (1)

redhatCVE-2008-5081Moderate

avahi: avahi-daemon DoS (application abort) via packet with source port 0

Dec 12, 2008

References

avahi.org / milestone/Avahi%200.6.24
lists.opensuse.org / opensuse-security-announce/2009-02/msg00000.html
secunia.com / advisories/33153
secunia.com / advisories/33220
secunia.com / advisories/33279
secunia.com / advisories/33475
security.gentoo.org / glsa/glsa-200901-11.xml
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9987
exploit-db.com / exploits/7520
debian.org / security/2008/dsa-1690
openwall.com / lists/oss-security/2008/12/14/1
securityfocus.com / bid/32825
ubuntu.com / usn/usn-696-1