CVE-2018-5127

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

Description

A buffer overflow can occur when manipulating the SVG "animatedPathSegList" through script. This results in a potentially exploitable crash. 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-2018-5127

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-5127.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.