CVE-2021-42308 json
Microsoft Edge (Chromium-based) Spoofing Vulnerability
published 2021-11-24 4 y ago modified 2026-08-19 2 mo ago also EUVD-2021-29283
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Patch / fix
- Microsoft Microsoft Edge (Chromium-based) 96.0 1954.29
Exploit prediction
1.34% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C |
| CNA | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- Microsoft Microsoft Edge (Chromium-based)
Classification
- Weakness
-
- CWE-290 Authentication Bypass by Spoofing
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2021-42308
vendor-advisory, patch
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-42308
patch, vendor-advisory
Sources
- CVE List CVE-2021-42308
- NVD CVE-2021-42308
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