How to verify CVE-2021-3658

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 12 NVT checks for CVE-2021-3658. 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='1.3.6.1.4.1.25623.1.0.845140' details='1'/>"

NVT OIDs (12)

1.3.6.1.4.1.25623.1.0.845140since 2026-06-25
1.3.6.1.4.1.25623.1.0.879898since 2026-06-25
1.3.6.1.4.1.25623.1.0.879925since 2026-06-25
1.3.6.1.4.1.25623.1.1.10.2021.0395since 2026-06-25
1.3.6.1.4.1.25623.1.1.12.2021.5155.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.1.2.2024.3879since 2026-06-25
1.3.6.1.4.1.25623.1.1.16.2021.1370since 2026-06-25
1.3.6.1.4.1.25623.1.1.2.2022.1200since 2026-06-25
1.3.6.1.4.1.25623.1.1.2.2022.1219since 2026-06-25
1.3.6.1.4.1.25623.1.1.4.2022.3687.1since 2026-06-25

+ 2 more NVTs

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