Is CVE-2018-18512 actively exploited?

No active exploitation of CVE-2018-18512 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-18512 be exploited remotely?

Yes. CVE-2018-18512 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-18512?

CVE-2018-18512 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2018-18512

CRITICAL

CVE-2018-18512

CWE-416Published: April 26, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A use-after-free vulnerability can occur while playing a sound notification in Thunderbird. The memory storing the sound data is immediately freed, although the sound is still being played asynchronously, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5.

NVD Source

Technical Analysis

CVE-2018-18512 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.