EXPOSURES › CVE-2021-42278
CVE-2021-42278
CRITICAL ⌖ ON CISA KEV · EXPLOITEDA Microsoft Active Directory vulnerability allowed privilege escalation, actively exploited and linked to ransomware attacks.
CVE-2021-42278 represents a critical privilege escalation vulnerability within Microsoft Active Directory, enabling attackers to gain elevated access. DIB organizations heavily reliant on Active Directory face significant compliance risk (NIST 800-171) and potential data exposure if unpatched. Immediate patching and thorough security posture review are essential.
Shame score — The vulnerability's active exploitation by ransomware groups highlights a serious failure in Microsoft's security practices and poses a significant threat to DIB organizations.
▸ RECOMMENDED ACTION Actively exploited (CISA KEV) — remediate now, ahead of your normal patch cycle.
Microsoft Active Directory Domain Services contains an unspecified vulnerability that allows for privilege escalation.
| PRODUCT | STATUS |
|---|---|
| Azure Commercial Cloud Microsoft |
Authorized |
| Azure Government (includes Dynamics 365) Microsoft |
Authorized |
| Microsoft Office 365 GCC High Microsoft |
In Process |
| Office 365 Multi-Tenant & Supporting Services Microsoft |
Authorized |