Is CVE-2018-7285 actively exploited?

No active exploitation of CVE-2018-7285 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-7285 be exploited remotely?

Yes. CVE-2018-7285 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-7285?

CVE-2018-7285 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2018-7285

CWE-476Published: February 22, 2018· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

A NULL pointer access issue was discovered in Asterisk 15.x through 15.2.1. The RTP support in Asterisk maintains its own registry of dynamic codecs and desired payload numbers. While an SDP negotiation may result in a codec using a different payload number, these desired ones are still stored internally. When an RTP packet was received, this registry would be consulted if the payload number was not found in the negotiated SDP. This registry was incorrectly consulted for all packets, even those which are dynamic. If the payload number resulted in a codec of a different type than the RTP stream (for example, the payload number resulted in a video codec but the stream carried audio), a crash could occur if no stream of that type had been negotiated. This was due to the code incorrectly assuming that a stream of that type would always exist.

NVD Source

Technical Analysis

CVE-2018-7285 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.