CVE-2026-10702: Mozilla Firefox

What is CVE-2026-10702?

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 151.0.3.

CVSS4.3 NVD 3.1

SeverityMEDIUM

ExploitationNo exploitation reported

EPSS1% · P43

Triage statusNo Known Exploit

ActionSchedule for next cycle

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

CWECWE-843, CWE-733

NVD published2026-06-02

NVD last modified2026-07-22

Timeline

2026-06-02Published to the U.S. National Vulnerability Database (NVD)
2026-07-22NVD record last updated

Affected product

Mozilla Firefox

Remediation Steps

Update Firefox to version 151.0.3 or later
Update Tor Browser to the latest version incorporating Firefox security patches
Educate users that visiting malicious webpages can trigger code execution without additional interaction
Consider restricting high-risk browsing activities or implementing browser isolation for sensitive users
Monitor for signs of browser-based compromise including unexpected processes or outbound connections

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 4 of July 2026 (July 27 – August 2)

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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.