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TI-2025-02642 Aliases CVE-2025-3029GHSA-799g-3g44-3g9m

URL Bar Spoofing via non-BMP Unicode characters

Priority LOW 32CWE-290Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Partial Red Hat: 15 fixed, 4 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-290.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00355 29th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 128.9, 137Thunderbird (Mozilla): 128.9, 137Red Hat: 21 advisoriesRed Hat: 15 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox—128.9, 137Patch availableCNA
MozillaThunderbird—128.9, 137Patch availableCNA
  • Firefox VendorMozilla Affected — Fixed in 128.9, 137 Patch available CNA
  • Thunderbird VendorMozilla Affected — Fixed in 128.9, 137 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*before 128.9.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*before 137.0VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 128.9.0; 129.0 to before 137.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* Versions before 128.9.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* Versions before 137.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 128.9.0; 129.0 to before 137.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 128.9, 137
  • Fix · CNA Thunderbird (Mozilla) Fixed in 128.9, 137

Red Hat 21 advisories

  • RHSA-2025:7493 Released 2025-05-13 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 10) thunderbird-128.9.0-2.el10_0
  • RHSA-2025:7491 Released 2025-05-13 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 10) firefox-128.9.0-3.el10_0
  • RHSA-2025:4170 Released 2025-04-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-128.9.0-2.el8_10
Show 18 more Red Hat advisories
  • RHSA-2025:4169 Released 2025-04-24 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-128.9.0-2.el9_5
  • RHSA-2025:4029 Released 2025-04-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) thunderbird-128.9.0-2.el8_8
  • RHSA-2025:4026 Released 2025-04-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) thunderbird-128.9.0-2.el9_4
  • RHSA-2025:4030 Released 2025-04-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) thunderbird-128.9.0-2.el8_6
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) thunderbird-128.9.0-2.el8_6
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) thunderbird-128.9.0-2.el8_6
  • RHSA-2025:4027 Released 2025-04-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) thunderbird-128.9.0-2.el9_2
  • RHSA-2025:4031 Released 2025-04-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird-128.9.0-2.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird-128.9.0-2.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird-128.9.0-2.el8_4
  • RHSA-2025:4028 Released 2025-04-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) thunderbird-128.9.0-2.el9_0
  • RHSA-2025:4032 Released 2025-04-23 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-128.9.0-2.el8_2
  • RHSA-2025:3628 Released 2025-04-07 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) firefox-128.9.0-2.el7_9
  • RHSA-2025:3620 Released 2025-04-07 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox-128.9.0-2.el8_8
  • RHSA-2025:3621 Released 2025-04-07 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox-128.9.0-2.el8_6
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox-128.9.0-2.el8_6
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox-128.9.0-2.el8_6
  • RHSA-2025:3623 Released 2025-04-07 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-128.9.0-2.el8_2
  • RHSA-2025:3590 Released 2025-04-03 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) firefox-128.9.0-2.el9_4, firefox-x11-128.9.0-2.el9_4
  • RHSA-2025:3589 Released 2025-04-03 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox-128.9.0-2.el9_2, firefox-x11-128.9.0-2.el9_2
  • RHSA-2025:3587 Released 2025-04-03 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox-128.9.0-2.el9_0
  • RHSA-2025:3582 Released 2025-04-03 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-128.9.0-2.el8_10
  • RHSA-2025:3581 Released 2025-04-03 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-128.9.0-2.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-128.9.0-2.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-128.9.0-2.el8_4
  • RHSA-2025:3556 Released 2025-04-03 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-128.9.0-2.el9_5, firefox-x11-128.9.0-2.el9_5

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:7491, RHSA-2025:7493
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2025:3582, RHSA-2025:4170
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:3556, RHSA-2025:4169
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2025:3623, RHSA-2025:4032
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2025:3581, RHSA-2025:4031
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2025:3621, RHSA-2025:4030
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2025:3581, RHSA-2025:4031
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2025:3621, RHSA-2025:4030
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2025:3587, RHSA-2025:4028
Red Hat Enterprise Linux AppStream EUS (v.8.8)Fixed RHSA-2025:3620, RHSA-2025:4029
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2025:3589, RHSA-2025:4027
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:3590, RHSA-2025:4026
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2025:3581, RHSA-2025:4031
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2025:3621, RHSA-2025:4030
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2025:3628

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-3029
  2. 2026-10-03 Alias added: GHSA-799g-3g44-3g9m

References

Advisory 4

Other 1

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences