Memory corruption in Mozilla Thunderbird
Priority MEDIUM 48CWE-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
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
Memory safety bugs were reported in Firefox 57 and Firefox ESR 52.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
Why it matters now
EPSS 0.03335 88th percentileScored 2026-11-07
Fix Fixed Thunderbird (Mozilla): 52.6Firefox ESR (Mozilla): 52.6+1 more productRed Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mozilla | Thunderbird | before 52.6 | 52.6 | Patch available | CNA |
| Mozilla | Firefox ESR | before 52.6 | 52.6 | Patch available | CNA |
| Mozilla | Firefox | before 58 | 58 | Patch available | CNA |
- Thunderbird VendorMozilla Affected before 52.6 Fixed in 52.6 Patch available CNA
- Firefox ESR VendorMozilla Affected before 52.6 Fixed in 52.6 Patch available CNA
- Firefox VendorMozilla Affected before 58 Fixed in 58 Patch available CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* | 17.10 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 52.6.0; up to 58.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 52.6.0 | Vulnerable | Mozilla |
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 52.6.0; up to 58.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.6.0 Vulnerable ·Mozilla
Remediation
- Fix · CNA Thunderbird (Mozilla) Fixed in 52.6
- Fix · CNA Firefox ESR (Mozilla) Fixed in 52.6
- Fix · CNA Firefox (Mozilla) Fixed in 58
Red Hat 2 advisories
- RHSA-2018:0262 Released 2018-02-01 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-52.6.0-1.el7_4
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-52.6.0-1.el6_9
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-52.6.0-1.el6_9
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-52.6.0-1.el7_4
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-52.6.0-1.el6_9
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-52.6.0-1.el7_4
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-52.6.0-1.el7_4
- RHSA-2018:0122 Released 2018-01-24 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux Desktop (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Server (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Server (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-52.6.0-1.el6_9, firefox-52.6.0-1.el6_9.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-52.6.0-1.el7_4, firefox-52.6.0-1.el7_4.ppc
- Red Hat Enterprise Linux Workstation (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-52.6.0-1.el7_4
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — USN-3544-1
30 records Highest priority Priority MEDIUM 16 MEDIUM, 14 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03669 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2018:0122
11 records Highest priority Priority MEDIUM 10 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03669 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
Show 4 more groups
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — DSA-4096
11 records Highest priority Priority MEDIUM 10 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03669 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — DSA-4102
11 records Highest priority Priority MEDIUM 10 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03669 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2018:0262
10 records Highest priority Priority MEDIUM 9 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03669 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — USN-3688-1
5 records Highest priority Priority MEDIUM 5 MEDIUM
Other records, highest priority first
- TI-2018-03714 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 48
- TI-2017-05443 Memory corruption in Mozilla FirefoxPriority MEDIUM 48
- TI-2017-05427 Memory corruption in Mozilla FirefoxPriority MEDIUM 47
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:0262 |
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5089
- 2026-10-03 Alias added: GHSA-cg8w-v8x6-c23r
References
Advisory 11
- https://www.mozilla.org/security/advisories/mfsa2018-03/
- [debian-lts-announce] 20180129 [SECURITY] [DLA 1262-1] thunderbird security update
- DSA-4096
- RHSA-2018:0262
- USN-3544-1
- https://www.mozilla.org/security/advisories/mfsa2018-04/
- RHSA-2018:0122
- USN-3688-1
- https://www.mozilla.org/security/advisories/mfsa2018-02/
- [debian-lts-announce] 20180124 [SECURITY] [DLA 1256-1] firefox-esr security update
- DSA-4102
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-2018-5089 · CVE Program
- CVE-2018-5089 · NVD
- FIRST EPSS
- GHSA-cg8w-v8x6-c23r · GitHub Advisory Database · CC BY 4.0
- CVE-2018-5089 · 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