CVE-2021-43890 · netVigilance record NV21-0311

Microsoft Windows AppX Installer Spoofing

past due ransomware

What to do

Apply updates per vendor instructions.

CISA deadline 2021-12-29 · passed 4 years 8 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

Microsoft Windows AppX Installer contains a spoofing vulnerability which has a high impacts to confidentiality, integrity, and availability.

Who is affected

Microsoft Windows. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Timeline

2021-12-15
Added to CISA KEVExploitation in the wild confirmed by CISA
2021-12-29
CISA remediation deadlinepassed 4 years 8 months ago

Sources

NVD entry for CVE-2021-43890 nvd.nist.gov/vuln/detail/CVE-2021-43890
CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2021-43890