CVE-2025-12380 | Use-after-free in WebGPU internals triggered from a compromised child process

Starting with Firefox 142, it was possible for a compromised child process to trigger a use-after-free in the GPU or browser process using WebGPU-related IPC calls. This may have been usable to escape the child process sandbox. This vulnerability was fixed in Firefox 144.0.2.

Published: 2025-10-28 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-12380 is rated Moderate Risk (46.1/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.27%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-12380

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.06% 0.27% +0.22%
2 2026-04-07 0.05% 0.06% +0.01%
3 2026-03-26 — 0.05% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-12380

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-12380

OS Trackers for CVE-2025-12380

vendor priority summary link
alpine — CVE-2025-12380: 1 source package rows (firefox); 161 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 161. https://security.alpinelinux.org/vuln/CVE-2025-12380
debian not yet assigned CVE-2025-12380 not yet assigned priority: Debian including 1 source packages (firefox), 1 status rows across 1 suites (sid): resolved 1. https://security-tracker.debian.org/tracker/CVE-2025-12380
suse high CVE-2025-12380 severity important: SUSE including 11 source package names (MozillaFirefox, MozillaFirefox-144.0.2-1.1, …), 85 product×package rows across 25 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (25 product lines)): Known Not Affected 80, Fixed 5. https://www.suse.com/security/cve/CVE-2025-12380/
ubuntu medium CVE-2025-12380 medium priority: Ubuntu including 2 source packages (firefox, thunderbird), 10 status rows across 5 suites (jammy, noble, plucky, questing, upstream): not-affected 8, needs-triage 2. https://ubuntu.com/security/CVE-2025-12380

Affected software / configurations for CVE-2025-12380

Vendor Product Version Raw CPE
mozilla firefox >= 142.0, < 144.0.2 cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

References for CVE-2025-12380

cvelogic Threat Intelligence