CVE-2018-18505
No exploitation reported by the sources we read.
- Published2019-02-05
- WeaknessCWE-287
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endpoints and server parents during IPC process creation. This authentication is insufficient for channels created after the IPC process is started, leading to the authentication not being correctly applied to later channels. This could allow for a sandbox escape through IPC channels due to lack of message validation in the listener process. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
Timeline
dates in UTC- 2019-02-0521:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-18505?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-18505?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 14.4 | = 14.04 | no fix published | NVD |
| 16.4 | = 16.04 | no fix published | NVD |
| 18.4 | = 18.04 | no fix published | NVD |
| 18.10 | = 18.10 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.0 | = 8.0 | no fix published | NVD |
| 9.0 | = 9.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 65.0 | < 65.0 | 65.0 | NVD |
| 60.5 | < 60.5.0 | 60.5.0 | NVD |
7 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Advisories and patches
- bugzilla.mozilla.orgPatch · Vendor Advisory
- www.mozilla.orgVendor Advisory
- www.mozilla.orgVendor Advisory
- www.mozilla.orgVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.010read 2026-10-23
- NVDCVSS 2.07.5read 2026-10-23
- NVDweakness (CWE)CWE-287read 2026-10-23
- FIRST EPSSEPSS score4.4 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Published
- 2019-02-05
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-18505?
Is CVE-2018-18505 actively exploited?
What is the CVSS score for CVE-2018-18505?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.