Vulnerability in Microsoft Windows 10 Version 1507
CVE-2021-33742
Windows MSHTML Platform Remote Code Execution Vulnerability
EPSS: 0.721 (98.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C.
Affected products
- Microsoft Windows 10 Version 1507 — versions 10.0.0
- Microsoft Windows 10 Version 1607 — versions 10.0.0
- Microsoft Windows 10 Version 1809 — versions 10.0.0
- Microsoft Windows 10 Version 1909 — versions 10.0.0
- Microsoft Windows 10 Version 2004 — versions 10.0.0
- Microsoft Windows 10 Version 20h2 — versions 10.0.0
- Microsoft Windows 10 Version 21h1 — versions 10.0.0
- Microsoft Windows 7 — versions 6.1.0
- Microsoft Windows 7 Service Pack 1 — versions 6.1.0
- Microsoft Windows 8.1 — versions 6.3.0
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33742 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-33742?
- CVE-2021-33742 is a high-severity vulnerability in Microsoft Windows 10 Version 1507. CVSS score: 7.5/10. Published 2021-06-08.
- How severe is CVE-2021-33742?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-33742 known to be exploited?
- Yes. CVE-2021-33742 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 6 public proof-of-concept repositories are indexed.