cbcvebase.
CVE-2023-6873
published 2023-12-19

CVE-2023-6873: Memory safety bugs present in Firefox 120. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could…

PriorityP341high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.85%
54.3th percentile
Memory safety bugs present in Firefox 120. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 121.

Affected

12 ranges
VendorProductVersion rangeFixed in
debiandebian_linux
debiandebian_linux
debiandebian_linux
debianfirefox< firefox 121.0-1 (sid)firefox 121.0-1 (sid)
debianthunderbird< firefox 121.0-1 (sid)firefox 121.0-1 (sid)
mozillafirefox< 121.0121.0
mozillafirefox
mozillafirefox>= 0 < 121.0+build1-0ubuntu0.20.04.1121.0+build1-0ubuntu0.20.04.1
mozillafirefox>= 0 < 121.0.1+build1-0ubuntu0.20.04.1121.0.1+build1-0ubuntu0.20.04.1
mozillafirefox>= unspecified < 121121
mozillathunderbird>= 0 < 1:115.6.0-1~deb11u11:115.6.0-1~deb11u1
mozillathunderbird>= 0 < 1:115.6.0-1~deb12u11:115.6.0-1~deb12u1

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8HIGH
vendor_ubuntu4.3MEDIUM
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.