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TI-2024-07783 Aliases CVE-2024-8394GHSA-688v-74jq-v222

Use after free in Mozilla Thunderbird

Priority LOW 29CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 10 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

When aborting the verification of an OTR chat session, an attacker could have caused a use-after-free bug leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 128.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00331 26th percentileScored 2026-11-07
Fix Partial Thunderbird (Mozilla): 128.2Red Hat: 8 advisoriesRed Hat: 10 fixed, 2 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
MozillaThunderbirdbefore 128.2128.2Patch availableCNA
  • Thunderbird VendorMozilla Affected before 128.2 Fixed in 128.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 128.2.0VulnerableMozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 128.2.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Thunderbird (Mozilla) Fixed in 128.2

Red Hat 8 advisories

  • RHSA-2024:6816 Released 2024-09-19 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) thunderbird-128.2.0-1.el8_6
  • RHSA-2024:6719 Released 2024-09-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) thunderbird-128.2.0-1.el8_8
  • RHSA-2024:6721 Released 2024-09-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird-128.2.0-1.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird-128.2.0-1.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird-128.2.0-1.el8_4
Show 5 more Red Hat advisories
  • RHSA-2024:6723 Released 2024-09-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-128.2.0-1.el8_2
  • RHSA-2024:6720 Released 2024-09-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) thunderbird-128.2.0-1.el9_2
  • RHSA-2024:6722 Released 2024-09-17 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) thunderbird-128.2.0-1.el9_0
  • RHSA-2024:6683 Released 2024-09-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-128.2.0-1.el9_4
  • RHSA-2024:6684 Released 2024-09-16 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-128.2.0-1.el8_10

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
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 AppStream (v. 8)Fixed RHSA-2024:6684
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:6683
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2024:6723
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2024:6721
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2024:6721
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2024:6722
Red Hat Enterprise Linux AppStream EUS (v.8.8)Fixed RHSA-2024:6719
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:6720
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2024:6721
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2024:6816

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-8394
  2. 2026-10-03 Alias added: GHSA-688v-74jq-v222

References

Advisory 1

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 2067 →

Sources

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