Exploited vulnerability · CISA KEV

Is CVE-2019-11539 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · Ivanti Pulse Connect Secure and Pulse Policy Secure · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-11539, Ivanti Pulse Connect Secure and Policy Secure Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 922 days after it was published. It is known to be used in ransomware campaigns. It affects Ivanti Pulse Connect Secure and Pulse Policy Secure, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

Ivanti Pulse Connect Secure and Policy Secure allows an authenticated attacker from the admin web interface to inject and execute commands.

What to do

1. Check whether you run it. Look for Pulse Connect Secure and Pulse Policy Secure in your asset inventory, including appliances and cloud images. Stack check lists every exploited Ivanti 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 26 Apr 2019.
4. Get told next time. Email alerts when CISA adds a CVE for Ivanti.

References

• nvd.nist.gov/vuln/detail/CVE-2019-11539

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 November 2021 · Ivanti scorecard · act-now radar.