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Known exploited vulnerability

CVE-2018-20753

criticalCVSS 3.1 9.8In CISA KEVRansomwareEPSS 30%Published · n/a

The short answer

CVE-2018-20753 affects n/a n/a and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-04-13: attackers are using it, so patch it first.

What it is

Kaseya VSA RMM before R9.3 9.3.0.35, R9.4 before 9.4.0.36, and R9.5 before 9.5.0.5 allows unprivileged remote attackers to execute PowerShell payloads on all managed devices. In January 2018, attackers actively exploited this vulnerability in the wild.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Apr 13, 2022

Federal due date May 4, 2022

EPSS, next 30 days

30%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

n/a. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2018-20753 being exploited?

Yes. CISA added CVE-2018-20753 to its Known Exploited Vulnerabilities catalog on 2022-04-13, with a federal remediation due date of 2022-05-04. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2018-20753?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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