How to verify CVE-2021-42376

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 15 NVT checks for CVE-2021-42376. 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='1.3.6.1.4.1.25623.1.0.149888' details='1'/>"

NVT OIDs (15)

1.3.6.1.4.1.25623.1.0.149888since 2026-06-25
1.3.6.1.4.1.25623.1.0.819340since 2026-06-25
1.3.6.1.4.1.25623.1.0.819344since 2026-06-25
1.3.6.1.4.1.25623.1.0.854394since 2026-06-25
1.3.6.1.4.1.25623.1.1.10.2021.0533since 2026-06-25
1.3.6.1.4.1.25623.1.1.16.2021.1447since 2026-06-25
1.3.6.1.4.1.25623.1.1.2.2022.1287since 2026-06-25
1.3.6.1.4.1.25623.1.1.2.2022.1303since 2026-06-25
1.3.6.1.4.1.25623.1.1.2.2022.1463since 2026-06-25
1.3.6.1.4.1.25623.1.1.2.2022.1472since 2026-06-25

+ 5 more NVTs

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