CVE-2021-27085 kev in the critical feed json
Internet Explorer Remote Code Execution Vulnerability
published 5y ago modified 2mo ago also EUVD-2021-13856
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2021-11-03
- epss
- 5.4%
- EPSS 5.4% chance of exploitation in 30 days, percentile 92%
- public exploits
- 0
- none known
Summary
Internet Explorer Remote Code Execution Vulnerability
Patch / fix
cisa required action Apply updates per vendor instructions.
- Microsoft Internet Explorer 11 10.0.17134.2087
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Check with FencerTimeline
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 5y ago
- Patch by
- 2021-11-17 (4y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Internet Explorer
- CISA name
- Microsoft Internet Explorer Remote Code Execution Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2y ago
Exploit prediction
5.45% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L/E:P/RL:O/RC:C |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.6 | AV:N/AC:H/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Internet Explorer 11
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2021-27085
vendor-advisory, patch
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-27085
patch, vendor-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27085
government-resource, us-government-resource
Sources
- CVE List CVE-2021-27085
- NVD CVE-2021-27085
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.