How to verify CVE-2021-41091

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 23 NVT checks for CVE-2021-41091. 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='1.3.6.1.4.1.25623.1.0.819035' details='1'/>"

NVT OIDs (23)

1.3.6.1.4.1.25623.1.0.819035since 2026-06-25
1.3.6.1.4.1.25623.1.0.819041since 2026-06-25
1.3.6.1.4.1.25623.1.0.819106since 2026-06-25
1.3.6.1.4.1.25623.1.0.819167since 2026-06-25
1.3.6.1.4.1.25623.1.0.854244since 2026-06-25
1.3.6.1.4.1.25623.1.0.854260since 2026-06-25
1.3.6.1.4.1.25623.1.0.854441since 2026-06-25
1.3.6.1.4.1.25623.1.1.10.2021.0500since 2026-06-25
1.3.6.1.4.1.25623.1.1.16.2022.1739since 2026-06-25
1.3.6.1.4.1.25623.1.1.17.2024.0189since 2026-06-25

+ 13 more NVTs

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