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CVE-2007-1561

36
FAUCET Score

CVE-2007-1561 describes a denial-of-service vulnerability in Asterisk versions before 1.2.17 and 1.4.x before 1.4.2. Remote attackers can crash the Asterisk channel driver by sending a specially crafted SIP INVITE message containing an SDP with both a valid and an invalid IP address. This vulnerability has a CVSS score of 7.8, indicating high severity, and can be exploited remotely with low attack complexity, leading to a complete loss of availability. While not listed on the KEV catalog or Hot List, public exploit code is available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.14CPE matchmatch criteria
cpe:2.3:a:asterisk:asterisk:1.2.14:*:*:*:*:*:*:*
1.2.15CPE matchmatch criteria
cpe:2.3:a:asterisk:asterisk:1.2.15:*:*:*:*:*:*:*
1.2.16CPE matchmatch criteria
cpe:2.3:a:asterisk:asterisk:1.2.16:*:*:*:*:*:*:*
1.4.1CPE matchmatch criteria
cpe:2.3:a:asterisk:asterisk:1.4.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
14.49%
Probability of exploitation in next 30 days
EPSS Percentile
96.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-3566 · Mar 25, 2007
This CVE's current EPSS score of 0.1449 is in the 94th percentile among its peer group of 51,466 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

asterisk.org / node/48339
marc.info
secunia.com / advisories/24564
secunia.com / advisories/24719
secunia.com / advisories/25582
security.gentoo.org / glsa/glsa-200704-01.xml
exchange.xforce.ibmcloud.com / vulnerabilities/33068
voipsa.org / pipermail/voipsec_voipsa.org/2007-March/002275.html
debian.org / security/2007/dsa-1358
novell.com / linux/security/advisories/2007_34_asterisk.html
osvdb.org / 34479
securityfocus.com / archive/1/463434/100/0/threaded
securityfocus.com / bid/23031
Patch
securitytracker.com / id
sineapps.com / news.php
vupen.com / english/advisories/2007/1039