CVE-2023-25737
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk53th percentile - higher than 53% of all known CVEs
Summary
An invalid downcast from nsTextNode to SVGElement could lead to undefined behavior in Firefox and Thunderbird. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
Risk Assessment
May cause crashes or potentially enable code execution when processing malicious content. Exposes users to application instability.
Recommendation
Update Firefox to version 110 or later, Thunderbird to 102.8 or later, and Firefox ESR to 102.8 or later.
Other vulnerabilities in Firefox
See all- CVE-2026-120572High
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Same-origin policy bypass in the DevTools component. Fixed in Firefox 158 and Thunderbird 158.
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A vulnerability in the DOM: Content Processes component allows sandbox escape. It was fixed in Firefox 158 and Thunderbird 158.
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A vulnerability in the DOM: Web Authentication component causes a site isolation issue. It was fixed in Firefox 158 and Thunderbird 158.
- CVE-2026-109745Critical
Sandbox escape due to uninitialized memory in the DOM: Web Serial component. It was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
- CVE-2026-109740Critical
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. The flaw was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Original NVD description (English source)
An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined behavior. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS