Is CVE-2013-2686 actively exploited?

No active exploitation of CVE-2013-2686 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2013-2686 be exploited remotely?

Yes. CVE-2013-2686 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2013-2686?

CVE-2013-2686 has a CVSS score of 5.0 (MEDIUM).

HOME VULNERABILITIESCVE-2013-2686

MEDIUM

CVE-2013-2686

CWE-119Published: April 1, 2013· Updated: Jun 16, 2026

5.0

CVSS v3.1

Official Description

main/http.c in the HTTP server in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones does not properly restrict Content-Length values, which allows remote attackers to conduct stack-consumption attacks and cause a denial of service (daemon crash) via a crafted HTTP POST request. NOTE: this vulnerability exists because of an incorrect fix for CVE-2012-5976.

NVD Source

Technical Analysis

CVE-2013-2686 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.