How to verify CVE-2021-3620

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 11 NVT checks for CVE-2021-3620. 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='1.3.6.1.4.1.25623.1.0.819055' details='1'/>"

NVT OIDs (11)

1.3.6.1.4.1.25623.1.0.819055since 2026-06-25
1.3.6.1.4.1.25623.1.0.819112since 2026-06-25
1.3.6.1.4.1.25623.1.0.819163since 2026-06-25
1.3.6.1.4.1.25623.1.0.854966since 2026-06-25
1.3.6.1.4.1.25623.1.1.10.2021.0487since 2026-06-25
1.3.6.1.4.1.25623.1.1.12.2022.5315.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.1.2.2023.3695since 2026-06-25
1.3.6.1.4.1.25623.1.1.18.1.2024.12302.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.4.2021.4152.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.4.2022.3178.1since 2026-06-25

+ 1 more NVT

New to OpenVAS? Greenbone documentation ↗

Confirmed exposed? That's one CVE on one host.

We check your whole external estate — hundreds of IPs and domains — for this and thousands more, on a schedule.

Scan my estate

Verify another CVE