CVSS 3.0
8.1 highCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2018-5163
High (8.1). EPSS 2.0% chance of exploitation in the next 30 days.
If a malicious attacker has used another vulnerability to gain full control over a content process, they may be able to replace the alternate data resources stored in the JavaScript Start-up Bytecode Cache (JSBC) for other JavaScript code. If the parent process then runs this replaced code, the executed script would be run with the parent process' privileges, escaping the sandbox on content processes. This vulnerability affects Firefox < 60.
Severity
- EPSS
- 2.0% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
- CWE
- CWE-281
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- mozilla:firefox