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TI-2024-07777 Aliases CVE-2024-8387GHSA-m294-4vh4-9qwg

Memory corruption in Mozilla Firefox

Priority MEDIUM 50CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 13 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

Memory safety bugs present in Firefox 129, Firefox ESR 128.1, and Thunderbird 128.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Thunderbird < 128.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00584 48th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 130Firefox ESR (Mozilla): 128.2+1 more productRed Hat: 17 advisoriesRed Hat: 13 fixed, 2 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
MozillaFirefoxbefore 130130Patch availableCNA
MozillaFirefox ESRbefore 128.2128.2Patch availableCNA
MozillaThunderbirdbefore 128.2128.2Patch availableCNA
  • Firefox VendorMozilla Affected before 130 Fixed in 130 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 128.2 Fixed in 128.2 Patch available CNA
  • Thunderbird VendorMozilla Affected before 128.2 Fixed in 128.2 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:129.0:*:*:*:*:*:*:*129.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:128.1:*:*:*:*:*:*:*128.1VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:128.1:*:*:*:*:*:*:*128.1VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:129.0:*:*:*:*:*:*:* Versions 129.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:128.1:*:*:*:*:*:*:* Versions 128.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:128.1:*:*:*:*:*:*:* Versions 128.1 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 130
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 128.2
  • Fix · CNA Thunderbird (Mozilla) Fixed in 128.2

Red Hat 17 advisories

  • RHSA-2024:6892 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox-128.2.0-1.el8_6
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox-128.2.0-1.el8_6
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox-128.2.0-1.el8_6
  • RHSA-2024:6891 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-128.2.0-1.el8_4
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-128.2.0-1.el8_4
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-128.2.0-1.el8_4
  • RHSA-2024:6850 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox-128.2.0-1.el8_8
Show 14 more Red Hat advisories
  • RHSA-2024:6838 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux Server (v. 7 ELS) firefox-128.2.0-1.el7_9
  • RHSA-2024:6839 Released 2024-09-19 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-128.2.0-1.el8_2
  • 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-2024:6786 Released 2024-09-18 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox-128.2.0-1.el9_2, firefox-x11-128.2.0-1.el9_2
  • RHSA-2024:6782 Released 2024-09-18 · Red Hat rating Important
    firefox update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox-128.2.0-1.el9_0
  • 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
  • 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
  • RHSA-2024:6681 Released 2024-09-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-128.2.0-1.el9_4, firefox-x11-128.2.0-1.el9_4
  • RHSA-2024:6682 Released 2024-09-16 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-128.2.0-1.el8_10

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox 130

    9 records Highest priority Priority MEDIUM 7 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2024-07771 Type confusion in Mozilla FirefoxPriority MEDIUM 56
    • TI-2024-07775 Type confusion in Mozilla FirefoxPriority MEDIUM 50
    • TI-2024-07774 Use after free in Mozilla FirefoxPriority MEDIUM 50
    Show all 9 records →
  • Release ·

    Mozilla Firefox ESR 128.2

    7 records Highest priority Priority MEDIUM 6 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2024-07771 Type confusion in Mozilla FirefoxPriority MEDIUM 56
    • TI-2024-07775 Type confusion in Mozilla FirefoxPriority MEDIUM 50
    • TI-2024-07774 Use after free in Mozilla FirefoxPriority MEDIUM 50
    Show all 7 records →
Show 1 more group
  • Release ·

    Mozilla Thunderbird 128.2

    6 records Highest priority Priority MEDIUM 5 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2024-07771 Type confusion in Mozilla FirefoxPriority MEDIUM 56
    • TI-2024-07775 Type confusion in Mozilla FirefoxPriority MEDIUM 50
    • TI-2024-07774 Use after free in Mozilla FirefoxPriority MEDIUM 50
    Show all 6 records →

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-2024:6682, RHSA-2024:6684
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:6681, RHSA-2024:6683
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2024:6723, RHSA-2024:6839
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2024:6721, RHSA-2024:6891
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2024:6892
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2024:6721, RHSA-2024:6891
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2024:6892
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2024:6722, RHSA-2024:6782
Red Hat Enterprise Linux AppStream EUS (v.8.8)Fixed RHSA-2024:6719, RHSA-2024:6850
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:6720, RHSA-2024:6786
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2024:6721, RHSA-2024:6891
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2024:6816, RHSA-2024:6892
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2024:6838

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-8387
  2. 2026-10-03 Alias added: GHSA-m294-4vh4-9qwg

References

Advisory 2

Other 2

  • 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