CVE-2018-12365

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

Description

A compromised IPC child process can escape the content sandbox and list the names of arbitrary files on the file system without user consent or interaction. This could result in exposure of private local files. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, 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-2018-12365

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-12365.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-201807-4

OS impact

OSVersionStatusFixed in
arch archfixed52.9.1-1
suse slesaffected
debian debiansidfixed61.0-1
debian debianbookwormfixed52.9.0esr-1
debian debianbullseyefixed52.9.0esr-1
debian debianforkyfixed52.9.0esr-1
debian debiantrixiefixed52.9.0esr-1

References

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