CVE-2026-14241

⛔ critical

Summary

Memory safety bugs present in Firefox 152.0.3. 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 was fixed in Firefox 152.0.4.

CVSS Score

9.8

Critical

EPSS Score

0.2

Exploit Probability

Published Date

2026-06-30

First Seen: 2026-07-01

📊 Relative Risk Intelligence

This CVE is Very High Risk - more severe than 90.5% of all 338,292 vulnerabilities in our database.

#31,990

Top 10% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jul 1, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

🏆 Discovered By

Christian Holler, Gabriele Svelto, Greg Stoll and the Mozilla Fuzzing Team

SSVC data provided by CISA

Last Modified 2026-07-06

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-787 CWE-119

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
mozilla	firefox	Affected	v152.0.3

🔗 References 3

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2043...

Broken Link

https://bugzilla.mozilla.org/show_bug.cgi?id=2046814

Permissions Required

https://www.mozilla.org/security/advisories/mfsa2026...

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-16349	⛔ critical	9.8	0.2	Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115...	2026-07-21
CVE-2026-16350	⛔ critical	9.8	0.4	Incorrect boundary conditions in the Audio/Video: cubeb component. This vulnerability was fixed in Firefox 153, Firefox ...	2026-07-21
CVE-2026-16351	⛔ critical	9.8	0.4	Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Fire...	2026-07-21
CVE-2026-16352	⛔ critical	9.8	0.4	Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 15...	2026-07-21
CVE-2026-16353	⛔ critical	9.8	0.4	Invalid pointer in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38...	2026-07-21
CVE-2026-16354	⚠️ high	7.5	0.3	Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153, Firefox ESR 115...	2026-07-21

These CVEs affect the same products