How to verify CVE-2026-59856

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 17 NVT checks for CVE-2026-59856. 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='1.3.6.1.4.1.25623.1.1.11.2026.47982' details='1'/>"

NVT OIDs (17)

1.3.6.1.4.1.25623.1.1.11.2026.47982since 2026-08-01
1.3.6.1.4.1.25623.1.1.11.2026.48650since 2026-08-04
1.3.6.1.4.1.25623.1.1.12.2026.8541.1since 2026-07-16
1.3.6.1.4.1.25623.1.1.14.2026.47982since 2026-08-01
1.3.6.1.4.1.25623.1.1.14.2026.48650since 2026-08-04
1.3.6.1.4.1.25623.1.1.15.2026.47982since 2026-08-04
1.3.6.1.4.1.25623.1.1.15.2026.48650since 2026-08-05
1.3.6.1.4.1.25623.1.1.16.2026.3122since 2026-07-29
1.3.6.1.4.1.25623.1.1.18.1.2026.21374.1since 2026-07-24
1.3.6.1.4.1.25623.1.1.4.2026.22821.1since 2026-07-30

+ 7 more NVTs

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