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CVE-2013-5580

16
FAUCET Score

CVE-2013-5580 describes a denial-of-service vulnerability in ngIRCd versions 18 through 20.2, specifically within the Conn_StartLogin and cb_Read_Resolver_Result functions in conn.c. When the NoticeAuth configuration option is enabled, improper handling of the Handle_Write function's return code allows remote attackers to trigger an assertion failure and server crash. This vulnerability has a CVSS score of 4.3 (medium severity), indicating a network-based attack with medium complexity and potential for partial availability impact. There is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
18.0CPE matchmatch criteria
cpe:2.3:a:barton:ngircd:18.0:*:*:*:*:*:*:*
19.0CPE matchmatch criteria
cpe:2.3:a:barton:ngircd:19.0:*:*:*:*:*:*:*
19.1CPE matchmatch criteria
cpe:2.3:a:barton:ngircd:19.1:*:*:*:*:*:*:*
20.0CPE matchmatch criteria
cpe:2.3:a:barton:ngircd:20.0:*:*:*:*:*:*:*
20.1CPE matchmatch criteria
cpe:2.3:a:barton:ngircd:20.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.32%
Probability of exploitation in next 30 days
EPSS Percentile
81.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0232 is in the 70th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Remediation records are not available for this CVE.

References

arthur.barton.de / cgi-bin/gitweb.cgi
arthur.barton.de / pipermail/ngircd-ml/2013-August/000645.html
freecode.com / projects/ngircd/releases/357245
Patch
lists.fedoraproject.org / pipermail/package-announce/2013-September/115047.html
lists.fedoraproject.org / pipermail/package-announce/2013-September/115077.html
osvdb.org / 96590
secunia.com / advisories/54567
Vendor Advisory