Is CVE-2023-25736 actively exploited?

No active exploitation of CVE-2023-25736 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-25736 be exploited remotely?

Yes. CVE-2023-25736 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-25736?

CVE-2023-25736 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-25736

CRITICAL

CVE-2023-25736

NVD-CWE-noinfoPublished: June 19, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

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

NVD Source

Risk Analysis

This vulnerability involves an invalid memory downcast in Firefox that could lead to undefined behavior. With a CVSS score of 9.8, it is considered critical due to the potential for full system compromise, though it is not currently listed in the CISA KEV catalog.

There is no known public exploit for this vulnerability, which is remotely exploitable with low attack complexity.

Recommended Action

Users should update to Firefox version 110 or later to resolve this issue.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-25736 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.