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CVE-2017-16672

22
FAUCET Score

CVE-2017-16672 describes a memory leak vulnerability in Asterisk Open Source versions prior to 13.18.1, 14.7.1, and 15.1.1, and Certified Asterisk prior to 13.13-cert7. This flaw occurs when a pjsip session is rejected before full establishment, preventing the session object from being destroyed and eventually leading to an out-of-memory crash. Rated Medium severity with a CVSS score of 5.9, the vulnerability has a network attack vector and high attack complexity, resulting in a high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 13.0.0, < 13.18.1CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
>= 14.0.0, < 14.7.1CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
>= 15.0.0, < 15.1.1CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
13.13.0CPE matchmatch criteria
cpe:2.3:a:digium:certified_asterisk:13.13.0:*:*:*:*:*:*:*
13.13.0CPE matchmatch criteria
cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.68%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0468 is in the 88th percentile among its peer group of 19,958 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.digium.com / pub/security/AST-2017-011.html
Vendor Advisory
issues.asterisk.org / jira/browse/ASTERISK-27345
Vendor Advisory
security.gentoo.org / glsa/201811-11
debian.org / security/2017/dsa-4076
securityfocus.com / bid/101765
Third Party AdvisoryVDB Entry