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TI-2025-00199 Aliases CVE-2025-0241GHSA-hh4j-jwjv-8726

Memory corruption when using JavaScript Text Segmentation

Priority MEDIUM 43CWE-401Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Denial of service
Confidentiality · integrity · availability
High · High · Low
Fix status
Partial Red Hat: 14 fixed, 4 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-401.

Summary

When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00734 54th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 128.6, 134Thunderbird (Mozilla): 128.6, 134Red Hat: 19 advisoriesRed Hat: 14 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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—128.6, 134Patch availableCNA
MozillaThunderbird—128.6, 134Patch availableCNA
  • Firefox VendorMozilla Affected — Fixed in 128.6, 134 Patch available CNA
  • Thunderbird VendorMozilla Affected — Fixed in 128.6, 134 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*before 128.6.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 134.0VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 128.6.0; 129.0 to before 134.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* Versions before 128.6.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 134.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 128.6.0; 129.0 to before 134.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 128.6, 134
  • Fix · CNA Thunderbird (Mozilla) Fixed in 128.6, 134

Red Hat 19 advisories

  • RHSA-2025:0286 Released 2025-01-13 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-128.6.0-3.el8_2
  • RHSA-2025:0287 Released 2025-01-13 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird-128.6.0-3.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird-128.6.0-3.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird-128.6.0-3.el8_4
  • RHSA-2025:0284 Released 2025-01-13 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) thunderbird-128.6.0-3.el8_8
Show 16 more Red Hat advisories
  • RHSA-2025:0281 Released 2025-01-13 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-128.6.0-3.el8_10
  • RHSA-2025:0275 Released 2025-01-13 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) thunderbird-128.6.0-3.el8_6
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) thunderbird-128.6.0-3.el8_6
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) thunderbird-128.6.0-3.el8_6
  • RHSA-2025:0167 Released 2025-01-09 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) thunderbird-128.6.0-3.el9_2
  • RHSA-2025:0166 Released 2025-01-09 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) thunderbird-128.6.0-3.el9_4
  • RHSA-2025:0165 Released 2025-01-09 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) thunderbird-128.6.0-3.el9_0
  • RHSA-2025:0162 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox-128.6.0-1.el9_0
  • RHSA-2025:0144 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-128.6.0-1.el8_10
  • RHSA-2025:0147 Released 2025-01-09 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-128.6.0-3.el9_5
  • RHSA-2025:0137 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox-128.6.0-1.el8_8
  • RHSA-2025:0138 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox-128.6.0-1.el9_2, firefox-x11-128.6.0-1.el9_2
  • RHSA-2025:0136 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox-128.6.0-1.el8_6
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox-128.6.0-1.el8_6
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox-128.6.0-1.el8_6
  • RHSA-2025:0132 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) firefox-128.6.0-1.el7_9
  • RHSA-2025:0135 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) firefox-128.6.0-1.el9_4, firefox-x11-128.6.0-1.el9_4
  • RHSA-2025:0134 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-128.6.0-1.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-128.6.0-1.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-128.6.0-1.el8_4
  • RHSA-2025:0133 Released 2025-01-09 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-128.6.0-1.el8_2
  • RHSA-2025:0080 Released 2025-01-08 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-128.6.0-1.el9_5, firefox-x11-128.6.0-1.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. 8)Fixed RHSA-2025:0144, RHSA-2025:0281
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:0080, RHSA-2025:0147
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2025:0133, RHSA-2025:0286
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2025:0134, RHSA-2025:0287
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2025:0136, RHSA-2025:0275
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2025:0134, RHSA-2025:0287
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2025:0136, RHSA-2025:0275
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2025:0162, RHSA-2025:0165
Red Hat Enterprise Linux AppStream EUS (v.8.8)Fixed RHSA-2025:0137, RHSA-2025:0284
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2025:0138, RHSA-2025:0167
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:0135, RHSA-2025:0166
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2025:0134, RHSA-2025:0287
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2025:0136, RHSA-2025:0275
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2025:0132

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-0241
  2. 2026-10-03 Alias added: GHSA-hh4j-jwjv-8726

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