CVE-2021-42307
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
- Record
CVE-2021-42307- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-29282
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
- Record
EUVD-2021-29282- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-9qgv-jm4q-8gqq
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
- Record
GHSA-9qgv-jm4q-8gqq- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
NVD
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
- Record
CVE-2021-42307- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N - 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-2021-42307 is a medium vulnerability (CVSS 4.3) in Microsoft Edge (chromium-based), published June 30, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.04%, the 64th percentile. No source names a fixed version.