SARA / Free Tools / CVE / CVE-2023-25736

CVE-2023-25736 — An invalid downcast from `nsHTMLDocument` to `nsIContent` could have lead to und

An invalid downcast from `nsHTMLDocument` to `nsIContent` could have lead to undefined behavior. This vulnerability affects Firefox < 110.

CVSS

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EPSS

0.43% (top 37.50%)

CWE

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Published

2023-06-19T10:22:11.713Z

Last modified

2024-12-11T16:18:31.099Z

CVSS vector

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01What is this vulnerability?

An invalid downcast from `nsHTMLDocument` to `nsIContent` could have lead to undefined behavior. This vulnerability affects Firefox < 110.

Vendor	Product	Versions
Mozilla	Firefox	unspecified

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

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