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CVE-2025-13023

32
FAUCET Score

CVE-2025-13023 is a critical sandbox escape vulnerability in the Graphics: WebGPU component of Mozilla Firefox and Thunderbird, affecting versions prior to 145. With a CVSS score of 9.8, this flaw allows unauthenticated attackers to achieve complete compromise of confidentiality, integrity, and availability with low attack complexity. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 145.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 5th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2025-13023Important

firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component

Nov 11, 2025

References

bugzilla.mozilla.org / show_bug.cgi
Permissions Required
mozilla.org / security/advisories/mfsa2025-87
Vendor Advisory
mozilla.org / security/advisories/mfsa2025-90