Is CVE-2016-2316 in the CISA KEV catalog?

No. CVE-2016-2316 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-2316?

CVE-2016-2316 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2016-2316?

CVE-2016-2316 has an EPSS score of 4.97% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-2316?

Upgrade asterisk on debian 11 to 1:13.7.2~dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2016-2316

MEDIUMEPSS 91th pctl

5.9

CVSS v3

NVD

Description

chan_sip in Asterisk Open Source 1.8.x, 11.x before 11.21.1, 12.x, and 13.x before 13.7.1 and Certified Asterisk 1.8.28, 11.6 before 11.6-cert12, and 13.1 before 13.1-cert3, when the timert1 sip.conf configuration is set to a value greater than 1245, allows remote attackers to cause a denial of service (file descriptor consumption) via vectors related to large retransmit timeout values.

CWE-191

How to fix

Remediation Available

asteriskDebian

Fixed in:1:13.7.2~dfsg-1CVE-2016-2316

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

4.97%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch1

downloads.asterisk.org

Third-Party Advisory4

Other references1

debian.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.