Vulnerability Analysis
MSHTML Framework Security Feature Bypass Vulnerability
CVE-2026-21513
Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network.
CISA KEV
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
Temporal Score:-
EPSS:15.38%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2026-02-10
Ransomware Use
Unknown
KEV Due Date
2026-03-03
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
15.384%
EPSS Percentile
96.4th pct
GHSA ID
GitHub Severity
HIGH
SSVC Exploitation
—
SSVC Automatable
—
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
Social Buzz