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CVE-2013-2264

15
FAUCET Score

CVE-2013-2264 is an information disclosure vulnerability affecting multiple versions of Asterisk Open Source, Certified Asterisk, Asterisk Business Edition, and Asterisk Digiumphones. The vulnerability allows remote attackers to enumerate valid user account names by observing differing responses to invalid SIP INVITE, SUBSCRIBE, and REGISTER transactions. With a CVSS score of 5.0 (medium), this vulnerability has a low attack complexity and requires no authentication, but only impacts confidentiality by revealing account names. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

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

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

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

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 45th percentile among its peer group of 23,725 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

Remediation records are not available for this CVE.

References

downloads.asterisk.org / pub/security/AST-2013-003.html
Vendor Advisory
issues.asterisk.org / jira/browse/ASTERISK-21013
Vendor Advisory