Memory safety bugs present in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11.
Priority LOW 39CWE-786Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 18 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
Memory safety bugs present in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11. 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 < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0044 38th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 127Firefox ESR (Mozilla): 115.12+1 more productRed Hat: 18 advisoriesRed Hat: 18 fixed, 1 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mozilla | Firefox | before 127 | 127 | Patch available | CNA |
| Mozilla | Firefox ESR | before 115.12 | 115.12 | Patch available | CNA |
| Mozilla | Thunderbird | before 115.12 | 115.12 | Patch available | CNA |
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 127
- Fix · CNA Firefox ESR (Mozilla) Fixed in 115.12
- Fix · CNA Thunderbird (Mozilla) Fixed in 115.12
Red Hat 18 advisories
- RHSA-2024:4063 Released 2024-06-24 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) thunderbird-115.12.1-1.el8_6
- Red Hat Enterprise Linux AppStream E4S (v.8.6) thunderbird-115.12.1-1.el8_6
- Red Hat Enterprise Linux AppStream TUS (v.8.6) thunderbird-115.12.1-1.el8_6
- RHSA-2024:4036 Released 2024-06-20 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-115.12.1-1.el8_10
- RHSA-2024:4018 Released 2024-06-20 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.8) thunderbird-115.12.1-1.el8_8
Show 15 more Red Hat advisories
- RHSA-2024:4016 Released 2024-06-20 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-115.12.1-1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-115.12.1-1.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-115.12.1-1.el7_9
- RHSA-2024:4015 Released 2024-06-20 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) thunderbird-115.12.1-1.el9_0
- RHSA-2024:4002 Released 2024-06-20 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 9) thunderbird-115.12.1-1.el9_4
- RHSA-2024:4004 Released 2024-06-20 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.9.2) thunderbird-115.12.1-1.el9_2
- RHSA-2024:4003 Released 2024-06-20 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird-115.12.1-1.el8_4
- Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird-115.12.1-1.el8_4
- Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird-115.12.1-1.el8_4
- RHSA-2024:4001 Released 2024-06-20 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-115.12.1-1.el8_2
- RHSA-2024:3972 Released 2024-06-18 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox-115.12.0-1.el8_6
- Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox-115.12.0-1.el8_6
- Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox-115.12.0-1.el8_6
- RHSA-2024:3958 Released 2024-06-17 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox-115.12.0-1.el9_0
- RHSA-2024:3951 Released 2024-06-17 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-115.12.0-1.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-115.12.0-1.el7_9
- Red Hat Enterprise Linux Server (v. 7) firefox-115.12.0-1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-115.12.0-1.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-115.12.0-1.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-115.12.0-1.el7_9
- RHSA-2024:3955 Released 2024-06-17 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 9) firefox-115.12.0-1.el9_4, firefox-x11-115.12.0-1.el9_4
- RHSA-2024:3954 Released 2024-06-17 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-115.12.0-1.el8_10
- RHSA-2024:3953 Released 2024-06-17 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-115.12.0-1.el8_4
- Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-115.12.0-1.el8_4
- Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-115.12.0-1.el8_4
- RHSA-2024:3950 Released 2024-06-17 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.8) firefox-115.12.0-1.el8_8
- RHSA-2024:3949 Released 2024-06-17 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.9.2) firefox-115.12.0-1.el9_2, firefox-x11-115.12.0-1.el9_2
- RHSA-2024:3952 Released 2024-06-17 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-115.12.0-1.el8_2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox 127
15 records Highest priority Priority MEDIUM 5 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2024-05296 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 50
- TI-2024-05294 In violation of spec, cookie prefixes such as `__Secure` were being ignored if they were…Priority MEDIUM 50
- TI-2024-05290 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 50
- Release ·
Mozilla Firefox ESR, Thunderbird 115.12
8 records Highest priority Priority MEDIUM 2 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2024-05291 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 41
- TI-2024-05297 Use after free in Mozilla FirefoxPriority MEDIUM 40
- TI-2024-05283 Use after free in Mozilla FirefoxPriority LOW 39
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:3954, RHSA-2024:4036 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:3955, RHSA-2024:4002 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2024:3952, RHSA-2024:4001 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2024:3953, RHSA-2024:4003 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2024:3972, RHSA-2024:4063 |
| Red Hat Enterprise Linux AppStream E4S (v.8.4) | Fixed | RHSA-2024:3953, RHSA-2024:4003 |
| Red Hat Enterprise Linux AppStream E4S (v.8.6) | Fixed | RHSA-2024:3972, RHSA-2024:4063 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2024:3958, RHSA-2024:4015 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2024:3950, RHSA-2024:4018 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:3949, RHSA-2024:4004 |
| Red Hat Enterprise Linux AppStream TUS (v.8.4) | Fixed | RHSA-2024:3953, RHSA-2024:4003 |
| Red Hat Enterprise Linux AppStream TUS (v.8.6) | Fixed | RHSA-2024:3972, RHSA-2024:4063 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2024:3951, RHSA-2024:4016 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2024:3951 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2024:3951 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2024:3951, RHSA-2024:4016 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2024:3951, RHSA-2024:4016 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2024:3951 |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-5700
- 2026-10-03 Alias added: GHSA-pq6v-hjqm-frww
- 2026-11-03 CISA SSVC decision points changed
References
Advisory 3
More Mozilla Firefox vulnerabilities
- 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
Sources
- CVE-2024-5700 · CVE Program
- CVE-2024-5700 · NVD
- FIRST EPSS
- GHSA-pq6v-hjqm-frww · GitHub Advisory Database · CC BY 4.0
- CVE-2024-5700 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences