CVE-2026-15718

MEDIUM

Published Jul 14, 2026 Modified Jul 14, 2026 CWE-763

Description

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6.

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CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.05%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-763 CWE-763

Affected Products

Vendor	Product	Versions
mozilla	firefox	< 152.0.6

References

Advisories & Patches

https://www.mozilla.org/security/advisories/mfsa2026-67/

Other References

https://bugzilla.mozilla.org/show_bug.cgi?id=2045443

Frequently Asked Questions

What is CVE-2026-15718? +

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-15718? +

CVE-2026-15718 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0016, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-15718? +

CVE-2026-15718 affects products from mozilla, specifically: firefox. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-15718? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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