Exploited· due 2021-12-01used in ransomware
CVE-2021-40449
Microsoft Windows
Unspecified vulnerability allows for an authenticated user to escalate privileges.
Exploitation status
- CISA has confirmed this is being exploited in the wild. That is an observation of real attacks, not a prediction.
- It is known to have been used in ransomware campaigns.
- US federal civilian agencies are required to remediate it by 2021-12-01. That deadline does not bind private companies, but it is a reasonable benchmark for how urgently CISA views it.
Required action
Apply updates per vendor instructions.
CISA’s wording, unedited.
Scoring
- CVSS
- Not yet scored
Dates
- Published
- 2021-11-17
- Added to KEV
- 2021-11-17
- Remediation due
- 2021-12-01
- Sources
- CISA KEV