CVE-2021-42308
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Microsoft Edge (Chromium-based) Spoofing Vulnerability
- Record
CVE-2021-42308- CVSS 3.1
- 3.1 Low
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 - Updated
- 2026-11-02
EUVDEUVD-2021-29283
Microsoft Edge (Chromium-based) Spoofing Vulnerability
- Record
EUVD-2021-29283- CVSS 3.1
- 3.1 Low
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-8xpv-h7vw-hc6h
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Microsoft Edge (Chromium-based) Spoofing Vulnerability
- Record
GHSA-8xpv-h7vw-hc6h- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N - Weakness
- CWE-290
- Updated
- 2026-11-02
NVD
Microsoft Edge (Chromium-based) Spoofing Vulnerability
- Record
CVE-2021-42308- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-290
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42308 is a low vulnerability (CVSS 3.1) in Microsoft Edge (chromium-based), published November 24, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.34%, the 71st percentile. No source names a fixed version.