CVE-2026-2806
published 2026-02-24CVE-2026-2806: Uninitialized memory in the Graphics: Text component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
PriorityP346critical9.1CVSS 3.1
AVNACLPRNUINSUCHINAH
EPSS
0.39%
31.1th percentile
Uninitialized memory in the Graphics: Text component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 148.0-1 (sid) | firefox 148.0-1 (sid) |
| mozilla | firefox | < 148.0 | 148.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 148.0 | 148.0 |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
osv9.1CRITICAL
vendor_debian9.1CRITICAL
vendor_redhat9.1CRITICAL
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GHSA
GHSA-hwjj-g6g7-p8cf: Uninitialized memory in the Graphics: Text component
ghsa_unreviewed·2026-02-24
CVE-2026-2806 [CRITICAL] CWE-457 GHSA-hwjj-g6g7-p8cf: Uninitialized memory in the Graphics: Text component
Uninitialized memory in the Graphics: Text component. This vulnerability affects Firefox < 148.
OSV
CVE-2026-2806: Uninitialized memory in the Graphics: Text component
osv·2026-02-24·CVSS 9.1
CVE-2026-2806 [CRITICAL] CVE-2026-2806: Uninitialized memory in the Graphics: Text component
Uninitialized memory in the Graphics: Text component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
Red Hat
firefox: thunderbird: Uninitialized memory in the Graphics: Text component
vendor_redhat·2026-02-24·CVSS 9.1
CVE-2026-2806 [CRITICAL] firefox: thunderbird: Uninitialized memory in the Graphics: Text component
firefox: thunderbird: Uninitialized memory in the Graphics: Text component
Uninitialized memory in the Graphics: Text component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Uninitialized memory in the Graphics: Text component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: thunderbird (Red Hat Enterprise Linux 10) - Not affected
Package: firef
Debian
CVE-2026-2806: firefox - Uninitialized memory in the Graphics: Text component. This vulnerability affects...
vendor_debian·2026·CVSS 9.1
CVE-2026-2806 [CRITICAL] CVE-2026-2806: firefox - Uninitialized memory in the Graphics: Text component. This vulnerability affects...
Uninitialized memory in the Graphics: Text component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
Scope: local
sid: resolved (fixed in 148.0-1)
Mozilla
Mozilla Foundation Security Advisory 2026-16: CVE-2026-2806
vendor_mozilla·CVSS 9.1
CVE-2026-2806 [CRITICAL] Mozilla Foundation Security Advisory 2026-16: CVE-2026-2806
Mozilla Foundation Security Advisory 2026-16
CVE: CVE-2026-2806
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 148
Mozilla
Mozilla Foundation Security Advisory 2026-13: CVE-2026-2806
vendor_mozilla·CVSS 9.1
CVE-2026-2806 [CRITICAL] Mozilla Foundation Security Advisory 2026-13: CVE-2026-2806
Mozilla Foundation Security Advisory 2026-13
CVE: CVE-2026-2806
Product: Firefox
Impact: high
Fixed in: Firefox 148
No detection rules found.
No public exploits indexed.
2026-02-24
Published