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Exploited vulnerability · CISA KEV

Is CVE-2020-2506 exploited? Yes: in CISA KEV since 25 Mar 2022

Gociux · QNAP Systems Helpdesk · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-2506, QNAP Helpdesk Improper Access Control Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Mar 2022, 415 days after it was published. It affects QNAP Systems Helpdesk. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 25 Mar 2022
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity7.3CVSS 3.1 · high
US federal due15 Apr 2022BOD 22-01 deadline

What it is

QNAP Helpdesk contains an improper access control vulnerability which could allow an attacker to gain privileges or to read sensitive information.

VendorQNAP Systems (1 exploited CVE in KEV)
ProductHelpdesk
VulnerabilityQNAP Helpdesk Improper Access Control Vulnerability
WeaknessCWE-284
Published3 Feb 2021
Added to KEV25 Mar 2022
Reported by (CNA)qnap

What to do

  1. Check whether you run it. Look for Helpdesk in your asset inventory, including appliances and cloud images. Stack check lists every exploited QNAP Systems 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 3 Feb 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for QNAP Systems.

References

Questions

Is CVE-2020-2506 being exploited?

Yes. CISA added CVE-2020-2506 to the Known Exploited Vulnerabilities catalog on 25 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-2506 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-2020-2506?

Apply updates per vendor instructions. Check QNAP Systems's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Helpdesk 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 March 2022 · act-now radar.

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