How severe is CVE-2026-10702?

CVE-2026-10702 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-10702 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-10702?

CVE-2026-10702 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-10702?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-10702 have an EU (EUVD) identifier?

Yes. CVE-2026-10702 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33990.

When was CVE-2026-10702 published?

CVE-2026-10702 was published on 2026-06-02 and last updated on 2026-06-30.

CVE-2026-10702

CVE-2026-10702 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-843.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33990
Weakness: CWE-843
Affected product: Mozilla Firefox
Published: 2026-06-02
Last modified: 2026-06-30

Description

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

Frequently asked questions

What is CVE-2026-10702?: JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 151.0.3.
How severe is CVE-2026-10702?: CVE-2026-10702 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-10702 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-10702?: CVE-2026-10702 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-10702?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-10702 have an EU (EUVD) identifier?: Yes. CVE-2026-10702 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33990.
When was CVE-2026-10702 published?: CVE-2026-10702 was published on 2026-06-02 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

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