CVE-2021-20850

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-24 · updated 2026-06-17
Weakness: CWE-78

Description

PowerCMS XMLRPC API of PowerCMS 5.19 and earlier, PowerCMS 4.49 and earlier, PowerCMS 3.295 and earlier, and PowerCMS 2 Series (End-of-Life, EOL) allows a remote attacker to execute an arbitrary OS command via unspecified vectors.

Affected products

Alfasado Inc. PowerCMS: from 2.0 through 2.058; from 3.01 through 3.295; from 4.0 through 4.49; from 5.0 through 5.19

References

https://jvn.jp/en/jp/JVN17645965/index.html
https://www.powercms.jp/news/release-patch-xmlrpc-api-202110.html
https://jvn.jp/en/jp/JVN17645965/index.html
https://www.powercms.jp/news/release-patch-xmlrpc-api-202110.html

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