Microsoft MSHTML Remote Code Execution Vulnerability
Microsoft MSHTML engine contains an improper input validation vulnerability that allows for remote code execution vulnerability.
- Vendor
- Microsoft
- Product
- MSHTML
- CVSS
- 8.8
- EPSS (exploit probability)
- 53.2%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2019-0541 being exploited?
Yes. CISA added CVE-2019-0541 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 53.2% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2019-0541 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (181 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Microsoft MSHTML CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-21513 Microsoft MSHTML security feature bypasswrite-up | [ HIGH ] | 8.8 | 15.9% | |
| CVE-2021-40444 MSHTML Remote Code Execution via Malicious Office Documentransomware usewrite-up | [ HIGH ] | 8.8 | 97.8% |