Exploited vulnerability · CISA KEV

Is CVE-2016-0151 exploited? Yes: in CISA KEV since 28 Mar 2022

Gociux · Microsoft Client-Server Run-time Subsystem (CSRSS) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2016-0151, Microsoft Windows CSRSS Security Feature Bypass Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 28 Mar 2022, 2176 days after it was published. It is known to be used in ransomware campaigns. It affects Microsoft Client-Server Run-time Subsystem (CSRSS). If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

The Client-Server Run-time Subsystem (CSRSS) in Microsoft mismanages process tokens, which allows local users to gain privileges via a crafted application.

What to do

1. Check whether you run it. Look for Client-Server Run-time Subsystem (CSRSS) 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 12 Apr 2016.
4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

References

• nvd.nist.gov/vuln/detail/CVE-2016-0151

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.