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CVE

CVE-2025-3029

A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a poten

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.

HIGH · CVSS 7.3 EPSS 0.00134
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-290Authentication Bypass by Spoofing
▤

Affected Products & Versions

4
mozilla firefox< 128.9.0
mozilla firefox< 137.0
mozilla thunderbird< 128.9.0
mozilla thunderbird>= 129.0 and < 137.0
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSQLite Firefox Profile Data DB Access
▣

Scoring & Timeline

7.3
HIGH · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Apr 2025 · 01:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

29
usnUSN-7663-1
suse-csafopenSUSE-SU-2025:14971-1
suse-csafSUSE-SU-2025:1157-1
suse-csafopenSUSE-SU-2025:14966-1
suse-csafopenSUSE-SU-2025:14961-1
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.mozilla.org/show_bug.cgi?id=1952213Issue TrackingPermissions Required
https://www.mozilla.org/security/advisories/mfsa2025-20/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-22/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-23/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-24/Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/04/msg00005.html
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