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CVE-2016-2316

21
FAUCET Score

CVE-2016-2316 is a denial-of-service vulnerability affecting Asterisk Open Source and Certified Asterisk versions, specifically within the chan_sip module. When the 'timert1' configuration is set above 1245, remote attackers can exhaust file descriptors through large retransmit timeout values. This medium-severity vulnerability (CVSS 5.9) requires high attack complexity but can lead to a complete denial of service. There is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
23CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
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:*:*:*:*:*:*

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
4.97%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0497 is in the 89th percentile among its peer group of 19,956 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-2016-002.html
ExploitPatchVendor Advisory
lists.fedoraproject.org / pipermail/package-announce/2016-February/177409.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2016-February/177422.html
Third Party Advisory
debian.org / security/2016/dsa-3700
securityfocus.com / bid/82651
Third Party AdvisoryVDB Entry
securitytracker.com / id/1034930
Third Party AdvisoryVDB Entry