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CVE-2011-4598

16
FAUCET Score

CVE-2011-4598 describes a denial-of-service vulnerability in Asterisk Open Source versions 1.6.2.x before 1.6.2.21 and 1.8.x before 1.8.7.2, specifically when the automon feature is enabled. Remote attackers can exploit this by sending a crafted sequence of SIP requests, leading to a NULL pointer dereference and a daemon crash. This vulnerability has a CVSS score of 4.3, indicating a medium attack complexity with no authentication required, and its primary impact is a partial denial of service. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.0:*:*:*:*:*:*:*
1.8.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.0:beta1:*:*:*:*:*:*
1.8.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.0:beta2:*:*:*:*:*:*
1.8.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.0:beta3:*:*:*:*:*:*
1.8.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.0:beta4:*:*:*:*:*:*

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
2.44%
Probability of exploitation in next 30 days
EPSS Percentile
82.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0244 is in the 72nd 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

downloads.asterisk.org / pub/security/AST-2011-014.html
openwall.com / lists/oss-security/2011/12/09/3
openwall.com / lists/oss-security/2011/12/09/4
osvdb.org / 77598
secunia.com / advisories/47273
debian.org / security/2011/dsa-2367