CVE-2021-28465
Web Media Extensions Remote Code Execution Vulnerability
Web Media Extensions Remote Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Web Media Extensions Remote Code Execution Vulnerability
Web Media Extensions Remote Code Execution Vulnerability
- Record
CVE-2021-28465- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-15143
Web Media Extensions Remote Code Execution Vulnerability
- Record
EUVD-2021-15143- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v7rp-5m26-pxg5
Web Media Extensions Remote Code Execution Vulnerability
Web Media Extensions Remote Code Execution Vulnerability
- Record
GHSA-v7rp-5m26-pxg5- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-77, CWE-787
- Updated
- 2026-11-02
NVD
Web Media Extensions Remote Code Execution Vulnerability
- Record
CVE-2021-28465- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-787
- 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-2021-28465 is a high vulnerability (CVSS 7.8) in Microsoft Web Media Extensions, published May 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.66%, the 89th percentile. No source names a fixed version.