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| Vulnerability ID | VCID-dzd3-n1qy-9ufd |
| Aliases |
CVE-2020-12405
|
| Summary | When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. |
| Status | Published |
| Exploitability | None |
| Weighted Severity | None |
| Risk | None |
| Affected and Fixed Packages | Package Details |
| CWE-416 | Use After Free |
| System | Score | Found at |
|---|---|---|
| cvssv3 | 5.3 | https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12405.json |
| epss | 0.0066 | https://api.first.org/data/v1/epss?cve=CVE-2020-12405 |
| cvssv3.1 | 7.5 | https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml |
| archlinux | High | https://security.archlinux.org/AVG-1173 |
| archlinux | High | https://security.archlinux.org/AVG-1179 |
| generic_textual | high | https://www.mozilla.org/en-US/security/advisories/mfsa2020-20 |
| generic_textual | high | https://www.mozilla.org/en-US/security/advisories/mfsa2020-21 |
| generic_textual | high | https://www.mozilla.org/en-US/security/advisories/mfsa2020-22 |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.71444 |
| EPSS Score | 0.0066 |
| Published At | May 29, 2026, 12:55 p.m. |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-05-29T08:26:23.515153+00:00 | Mozilla Importer | Import | https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2020/mfsa2020-22.yml | 38.6.0 |