CVE-2018-5125

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

Description

Memory safety bugs were reported in Firefox 58 and Firefox ESR 52.6. 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 < 52.7, Firefox ESR < 52.7, and Firefox < 59.

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-2018-5125

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-5125.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201803-22

OS impact

OSVersionStatusFixed in
arch archfixed52.7.0-1
suse slesaffected
debian debiansidfixed59.0-1
debian debianbookwormfixed52.7.0esr-1
debian debianbullseyefixed52.7.0esr-1
debian debianforkyfixed52.7.0esr-1
debian debiantrixiefixed52.7.0esr-1

References

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