Use after free in Mozilla Thunderbird
Priority MEDIUM 48CWE-416Published · 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-416 and the CVSS impact.
Summary
A use-after-free vulnerability can occur while adjusting layout during SVG animations with text paths. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
Why it matters now
EPSS 0.03379 88th percentileScored 2026-11-07
Fix Fixed Thunderbird (Mozilla): 52.8Thunderbird ESR (Mozilla): 52.8+2 more productsRed Hat: 4 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 52.8 | 52.8 | Patch available | CNA |
| Mozilla | Thunderbird ESR | before 52.8 | 52.8 | Patch available | CNA |
| Mozilla | Firefox | before 60 | 60 | Patch available | CNA |
| Mozilla | Firefox ESR | before 52.8 | 52.8 | Patch available | CNA |
- Thunderbird VendorMozilla Affected before 52.8 Fixed in 52.8 Patch available CNA
- Thunderbird ESR VendorMozilla Affected before 52.8 Fixed in 52.8 Patch available CNA
- Firefox VendorMozilla Affected before 60 Fixed in 60 Patch available CNA
- Firefox ESR VendorMozilla Affected before 52.8 Fixed in 52.8 Patch available CNA
CPE configurations NVD · 20
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
| 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: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_server_aus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
- 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: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_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
Show 10 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* | 7.6 | 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:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 52.8.0; before 60.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 52.8.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:* | before 52.8.0 | Vulnerable | Mozilla |
| 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_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 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
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 52.8.0; before 60.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.8.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:* Versions before 52.8.0 Vulnerable ·Mozilla
- 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
Remediation
- Fix · CNA Thunderbird (Mozilla) Fixed in 52.8
- Fix · CNA Thunderbird ESR (Mozilla) Fixed in 52.8
- Fix · CNA Firefox (Mozilla) Fixed in 60
- Fix · CNA Firefox ESR (Mozilla) Fixed in 52.8
Red Hat 4 advisories
- RHSA-2018:1726 Released 2018-05-24 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-52.8.0-2.el6_9
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-52.8.0-2.el6_9
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-52.8.0-2.el6_9
- RHSA-2018:1725 Released 2018-05-24 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-52.8.0-1.el7_5
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-52.8.0-1.el7_5
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-52.8.0-1.el7_5
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-52.8.0-1.el7_5
- RHSA-2018:1415 Released 2018-05-14 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-52.8.0-1.el7_5
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-52.8.0-1.el7_5
- Red Hat Enterprise Linux Server (v. 7) firefox-52.8.0-1.el7_5
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-52.8.0-1.el7_5
- Red Hat Enterprise Linux Workstation (v. 7) firefox-52.8.0-1.el7_5
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-52.8.0-1.el7_5
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-52.8.0-1.el7_5
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) firefox-52.8.0-1.el7_5
Show 1 more Red Hat advisories
- RHSA-2018:1414 Released 2018-05-14 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux Desktop (v. 6) firefox-52.8.0-1.el6_9
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-52.8.0-1.el6_9
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-52.8.0-1.el6_9
- Red Hat Enterprise Linux Server (v. 6) firefox-52.8.0-1.el6_9
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-52.8.0-1.el6_9, firefox-52.8.0-1.el6_9.ppc
- Red Hat Enterprise Linux Workstation (v. 6) firefox-52.8.0-1.el6_9
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-52.8.0-1.el6_9
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Mozilla Firefox, Firefox ESR and 2 more products — USN-3645-1
24 records Highest priority Priority MEDIUM 6 MEDIUM, 18 LOW
Other records, highest priority first
- TI-2018-03723 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2018-03722 Code injection in Mozilla Firefox ESRPriority MEDIUM 51
- TI-2018-03718 Use after free in Mozilla ThunderbirdPriority MEDIUM 48
- Advisory ·
Mozilla Firefox, Firefox ESR and 2 more products — RHSA-2018:1725
12 records Highest priority Priority MEDIUM 6 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2018-03723 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2018-03746 Memory corruption in Mozilla Thunderbird ESRPriority MEDIUM 48
- TI-2018-03718 Use after free in Mozilla ThunderbirdPriority MEDIUM 48
Show 6 more groups
- Advisory ·
Mozilla Firefox, Firefox ESR and 2 more products — RHSA-2018:1726
12 records Highest priority Priority MEDIUM 6 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2018-03723 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2018-03746 Memory corruption in Mozilla Thunderbird ESRPriority MEDIUM 48
- TI-2018-03718 Use after free in Mozilla ThunderbirdPriority MEDIUM 48
- Advisory ·
Mozilla Firefox, Firefox ESR and 2 more products — USN-3660-1
12 records Highest priority Priority MEDIUM 6 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2018-03723 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2018-03746 Memory corruption in Mozilla Thunderbird ESRPriority MEDIUM 48
- TI-2018-03718 Use after free in Mozilla ThunderbirdPriority MEDIUM 48
- Advisory ·
Mozilla Firefox, Firefox ESR and 2 more products — DSA-4209
12 records Highest priority Priority MEDIUM 6 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2018-03723 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2018-03746 Memory corruption in Mozilla Thunderbird ESRPriority MEDIUM 48
- TI-2018-03718 Use after free in Mozilla ThunderbirdPriority MEDIUM 48
- Advisory ·
Mozilla Firefox, Firefox ESR and 2 more products — RHSA-2018:1414
9 records Highest priority Priority MEDIUM 7 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2018-03723 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2018-03722 Code injection in Mozilla Firefox ESRPriority MEDIUM 51
- TI-2018-03746 Memory corruption in Mozilla Thunderbird ESRPriority MEDIUM 48
- Advisory ·
Mozilla Firefox, Firefox ESR and 2 more products — RHSA-2018:1415
9 records Highest priority Priority MEDIUM 7 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2018-03723 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2018-03722 Code injection in Mozilla Firefox ESRPriority MEDIUM 51
- TI-2018-03746 Memory corruption in Mozilla Thunderbird ESRPriority MEDIUM 48
- Advisory ·
Mozilla Firefox, Firefox ESR and 2 more products — DSA-4199
9 records Highest priority Priority MEDIUM 7 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2018-03723 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 61
- TI-2018-03722 Code injection in Mozilla Firefox ESRPriority MEDIUM 51
- TI-2018-03746 Memory corruption in Mozilla Thunderbird ESRPriority MEDIUM 48
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:1415, RHSA-2018:1725 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:1415 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2018:1414, RHSA-2018:1726 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2018:1414 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2018:1414 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:1414 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:1415 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2018:1414, RHSA-2018:1726 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:1415, RHSA-2018:1725 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:1414, RHSA-2018:1726 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:1415, RHSA-2018:1725 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2018:1414 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:1415 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:1415 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:1415, RHSA-2018:1725 |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5155
- 2026-10-03 Alias added: GHSA-hjwf-v2m2-363g
References
Advisory 16
- RHSA-2018:1415
- GLSA-201810-01
- RHSA-2018:1726
- RHSA-2018:1414
- GLSA-201811-13
- https://www.mozilla.org/security/advisories/mfsa2018-13/
- https://www.mozilla.org/security/advisories/mfsa2018-11/
- USN-3660-1
- DSA-4199
- USN-3645-1
- [debian-lts-announce] 20180525 [SECURITY] [DLA 1382-1] thunderbird security update
- [debian-lts-announce] 20180511 [SECURITY] [DLA 1376-1] firefox-esr security update
- RHSA-2018:1725
- DSA-4209
- https://bugzilla.mozilla.org/show_bug.cgi?id=1448774
- https://www.mozilla.org/security/advisories/mfsa2018-12/
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-2018-5155 · CVE Program
- CVE-2018-5155 · NVD
- FIRST EPSS
- GHSA-hjwf-v2m2-363g · GitHub Advisory Database · CC BY 4.0
- CVE-2018-5155 · 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