CVE-2026-12293
published 2026-06-16CVE-2026-12293: Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
PriorityP348critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.30%
22.1th percentile
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 152 | Firefox 152 |
| mozilla | firefox | < 152.0.0 | 152.0.0 |
| mozilla | thunderbird | < Thunderbird 152 | Thunderbird 152 |
| mozilla | thunderbird | < 152.0.0 | 152.0.0 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_redhat7.5HIGH
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.
VulDB
Mozilla Firefox up to 151 WebGPU use after free (Nessus ID 321222 / WID-SEC-2026-1959)
vuldb·2026-07-03·CVSS 9.8
CVE-2026-12293 [CRITICAL] Mozilla Firefox up to 151 WebGPU use after free (Nessus ID 321222 / WID-SEC-2026-1959)
A vulnerability, which was classified as critical, was found in Mozilla Firefox up to 151. This affects an unknown part of the component WebGPU. Executing a manipulation can lead to use after free.
This vulnerability is handled as CVE-2026-12293. The attack can be executed remotely. There is not any exploit available.
You should upgrade the affected component.
GHSA
Use-after-free in the Graphics: WebGPU component.
ghsa_unreviewed·2026-06-16
CVE-2026-12293 [CRITICAL] CWE-416 Use-after-free in the Graphics: WebGPU component.
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152.
Red Hat
firefox: thunderbird: Use-after-free in the Graphics: WebGPU component
vendor_redhat·2026-06-16·CVSS 7.5
CVE-2026-12293 [HIGH] CWE-825 firefox: thunderbird: Use-after-free in the Graphics: WebGPU component
firefox: thunderbird: Use-after-free in the Graphics: WebGPU component
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Use-after-free in the Graphics: WebGPU 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: firefox (Red Hat
Mozilla
Mozilla Foundation Security Advisory 2026-57: CVE-2026-12293
vendor_mozilla
CVE-2026-12293 Mozilla Foundation Security Advisory 2026-57: CVE-2026-12293
Mozilla Foundation Security Advisory 2026-57
CVE: CVE-2026-12293
Product: Firefox
Impact: high
Fixed in: Firefox 152
Mozilla
Mozilla Foundation Security Advisory 2026-60: CVE-2026-12293
vendor_mozilla
CVE-2026-12293 Mozilla Foundation Security Advisory 2026-60: CVE-2026-12293
Mozilla Foundation Security Advisory 2026-60
CVE: CVE-2026-12293
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 152
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=2039568https://www.mozilla.org/security/advisories/mfsa2026-57/https://www.mozilla.org/security/advisories/mfsa2026-60/https://access.redhat.com/security/cve/CVE-2026-12293https://bugzilla.redhat.com/show_bug.cgi?id=2489216https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12293.json
2026-06-16
Published