How to verify CVE-2021-20193

Confirm whether your systems are actually affected — run the exact detection check below (Nuclei command or OpenVAS NVT). Detection only; it does not exploit.

Verify with OpenVAS

Greenbone/OpenVAS ships 24 NVT checks for CVE-2021-20193. OpenVAS detects this CVE by NVT OID — enable the NVT in your scan config, or confirm it is in your feed with the query below.

Confirm the NVT is in your feed (GMP)

gvm-cli socket --xml "<get_nvts nvt_oid='1.3.6.1.4.1.25623.1.0.845283' details='1'/>"

NVT OIDs (24)

1.3.6.1.4.1.25623.1.0.845283since 2026-06-25
1.3.6.1.4.1.25623.1.0.853621since 2026-06-25
1.3.6.1.4.1.25623.1.0.854671since 2026-06-25
1.3.6.1.4.1.25623.1.1.10.2021.0233since 2026-06-25
1.3.6.1.4.1.25623.1.1.12.2022.5329.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.16.2021.1173since 2026-06-25
1.3.6.1.4.1.25623.1.1.18.1.2024.11620.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.19.202102.41since 2026-06-25
1.3.6.1.4.1.25623.1.1.2.2021.1854since 2026-06-25
1.3.6.1.4.1.25623.1.1.2.2021.2036since 2026-06-25

+ 14 more NVTs

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