Out-of-bounds write in Mozilla Firefox ESR
Priority MEDIUM 47CWE-787Published · 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. Impact type from CWE-787 and the CVSS impact.
Summary
The libtremor library has the same flaw as CVE-2018-5146. This library is used by Firefox in place of libvorbis on Android and ARM platforms. This vulnerability affects Firefox ESR < 52.7.2 and Firefox < 59.0.1.
Why it matters now
EPSS 0.0239 84th percentileScored 2026-11-07
Fix Fixed Firefox ESR (Mozilla): 52.7.2Firefox (Mozilla): 59.0.1
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 | Firefox ESR | before 52.7.2 | 52.7.2 | Patch available | CNA |
| Mozilla | Firefox | before 59.0.1 | 59.0.1 | Patch available | CNA |
- Firefox ESR VendorMozilla Affected before 52.7.2 Fixed in 52.7.2 Patch available CNA
- Firefox VendorMozilla Affected before 59.0.1 Fixed in 59.0.1 Patch available CNA
CPE configurations NVD · 4
| 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:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 52.7.2; before 59.0.1 | Vulnerable | Mozilla |
- 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:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 52.7.2; before 59.0.1 Vulnerable ·Mozilla
Remediation
- Fix · CNA Firefox ESR (Mozilla) Fixed in 52.7.2
- Fix · CNA Firefox (Mozilla) Fixed in 59.0.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Mozilla Firefox, Firefox ESR — DSA-4143
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2018-03711 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 52
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5147
- 2026-10-03 Alias added: GHSA-mxw3-h8f2-qrw5
References
Advisory 5
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-2018-5147 · CVE Program
- CVE-2018-5147 · NVD
- FIRST EPSS
- GHSA-mxw3-h8f2-qrw5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences