Is CVE-2013-4981 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2013-4981, but active exploitation has not been confirmed.

Can CVE-2013-4981 be exploited remotely?

Yes. CVE-2013-4981 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2013-4981?

CVE-2013-4981 has a CVSS score of 9.0 (CRITICAL).

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CRITICALPOC

CVE-2013-4981

CWE-119Published: March 3, 2014· Updated: Jun 16, 2026

9.0

CVSS v3.1

Official Description

Buffer overflow in cgi-bin/user/Config.cgi in AVTECH AVN801 DVR with firmware 1017-1003-1009-1003 and earlier, and possibly other devices, allows remote attackers to cause a denial of service (device crash) and possibly execute arbitrary code via a long string in the Network.SMTP.Receivers parameter.

NVD Source

Technical Analysis

CVE-2013-4981 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.

A proof-of-concept (PoC) exploit exists for CVE-2013-4981. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

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