VDB
DEBIAN-CVE-2018-18500
DEBIAN-CVE-2018-18500
PUBLISHED
CVSS 9.800000190734863 CRITICAL
A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
Risk Scores
CVSS v3.0
9.800000190734863
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | firefox-esr | 0, 0, 0 |
| Debian:14 | thunderbird | 0, 0, 0 |
| Debian:12 | firefox-esr | 0, 0, 0 |
| Debian:11 | thunderbird | 0, 0, 0 |
| Debian:11 | firefox-esr | 0, 0, 0 |
| Debian:13 | firefox-esr | 0, 0, 0 |
| Debian:13 | thunderbird | 0, 0, 0 |
| Debian:12 | thunderbird | 0, 0, 0 |
Exploit Intelligence
- PoC for CVE-2018-18500 - Firefox Use-After-Free (github-poc-repo)
- PoC for CVE-2018-18500 - Firefox Use-After-Free (github-poc)
Timeline
- Feb 5, 2019 CVE Published
- Apr 28, 2026 CVE Updated