How to verify CVE-2021-33430

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 17 NVT checks for CVE-2021-33430. 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='1.3.6.1.4.1.25623.1.0.854385' details='1'/>"

NVT OIDs (17)

1.3.6.1.4.1.25623.1.0.854385since 2026-06-25
1.3.6.1.4.1.25623.1.0.854594since 2026-06-25
1.3.6.1.4.1.25623.1.0.854981since 2026-06-25
1.3.6.1.4.1.25623.1.1.10.2022.0032since 2026-06-25
1.3.6.1.4.1.25623.1.1.12.2022.5763.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.18.1.2024.11747.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.18.1.2024.13220.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.18.1.2024.14311.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.18.1.2025.14743.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.4.2022.0118.1since 2026-06-25

+ 7 more NVTs

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