CVE-2018-5187

critical
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
9.5

Description

Memory safety bugs present in Firefox 60 and Firefox ESR 60. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, and Firefox < 61.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-5187

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-5187.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201806-14

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201808-8

OS impact

OSVersionStatusFixed in
arch archfixed60.0-1
suse slesaffected
debian debiansidfixed61.0-1
debian debianbookwormfixed1:60.0-1
debian debianbullseyefixed1:60.0-1
debian debianforkyfixed1:60.0-1
debian debiantrixiefixed1:60.0-1

References

Verify integrity in audit chain (admin only). AS-IS.