CVE-2025-3029highCWE-290

CVE-2025-3029: high-severity vulnerability in Mozilla Firefox

URL Bar Spoofing via non-BMP Unicode characters

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.3epss 0.4%
A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a potential spoofing attack. This vulnerability was fixed in Firefox 137, Firefox ESR 128.9, Thunderbird 137, and Thunderbird 128.9.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected products
Mozilla · FirefoxMozilla · Thunderbird
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