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Exploited vulnerability · CISA KEV

Is CVE-2020-5722 exploited? Yes: in CISA KEV since 28 Jan 2022

Gociux · Grandstream UCM6200 · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-5722, Grandstream Networks UCM6200 Series SQL Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 28 Jan 2022, 676 days after it was published. It affects Grandstream UCM6200. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 28 Jan 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due28 Jul 2022BOD 22-01 deadline

What it is

Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request. Exploitation can allow for code execution as root.

VendorGrandstream (1 exploited CVE in KEV)
ProductUCM6200
VulnerabilityGrandstream Networks UCM6200 Series SQL Injection Vulnerability
WeaknessCWE-89
Published23 Mar 2020
Added to KEV28 Jan 2022
Reported by (CNA)tenable

What to do

  1. Check whether you run it. Look for UCM6200 in your asset inventory, including appliances and cloud images. Stack check lists every exploited Grandstream 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 23 Mar 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Grandstream.

References

Questions

Is CVE-2020-5722 being exploited?

Yes. CISA added CVE-2020-5722 to the Known Exploited Vulnerabilities catalog on 28 Jan 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-5722 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2020-5722?

Apply updates per vendor instructions. Check Grandstream's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected UCM6200 and watch it for signs of compromise.

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 January 2022 · act-now radar.

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