Actively exploited · Published Mar 11, 2021 · Assigned by microsoft
CVE-2021-27085Internet Explorer Remote Code Execution Vulnerability
High 8.8 Exploited
In plain English
A high-severity security flaw in Internet Explorer 11 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). The chance it is exploited in the next 30 days is estimated at 5.4% (higher than 93% of all known vulnerabilities). Apply updates per vendor instructions.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)5.4%top 7.2% of all CVEs
Exploited in the wildYesCISA KEV since Nov 3, 2021
Attack toolingNoneno public tooling known
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Nov 17, 2021.
Official description
Internet Explorer Remote Code Execution Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Internet Explorer 11 | 1.0.0 – before 10.0.17134.2087 |
References
- Internet Explorer Remote Code Execution Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27085 x_refsource_MISC, x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27085 government-resource