Exploited vulnerability · CISA KEV

Is CVE-2018-8405 exploited? Yes: in CISA KEV since 28 Mar 2022

Gociux · Microsoft DirectX Graphics Kernel (DXGKRNL) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2018-8405, Microsoft DirectX Graphics Kernel Privilege Escalation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 28 Mar 2022, 1321 days after it was published. It is known to be used in ransomware campaigns. It affects Microsoft DirectX Graphics Kernel (DXGKRNL). If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory.

What to do

1. Check whether you run it. Look for DirectX Graphics Kernel (DXGKRNL) in your asset inventory, including appliances and cloud images. Stack check lists every exploited Microsoft CVE at once.
2. Apply the fix. Apply updates per vendor instructions.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 15 Aug 2018.
4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in DirectX Graphics Kernel (DXGKRNL)

• CVE-2018-8406: Microsoft DirectX Graphics Kernel Privilege Escalation Vulnerability (28 Mar 2022)

References

• nvd.nist.gov/vuln/detail/CVE-2018-8405

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in March 2022 · Microsoft scorecard · act-now radar.