How to verify CVE-2021-3560

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-2021-3560. 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='1.3.6.1.4.1.25623.1.0.844968' details='1'/>"

NVT OIDs (23)

1.3.6.1.4.1.25623.1.0.844968since 2026-06-25
1.3.6.1.4.1.25623.1.0.853849since 2026-06-25
1.3.6.1.4.1.25623.1.0.853920since 2026-06-25
1.3.6.1.4.1.25623.1.0.879716since 2026-06-25
1.3.6.1.4.1.25623.1.0.879774since 2026-06-25
1.3.6.1.4.1.25623.1.1.10.2021.0244since 2026-06-25
1.3.6.1.4.1.25623.1.1.11.2021.2238since 2026-06-25
1.3.6.1.4.1.25623.1.1.12.2021.4980.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.13.2021.158.02since 2026-06-25
1.3.6.1.4.1.25623.1.1.14.2021.2238since 2026-06-25

+ 13 more NVTs

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