How to verify CVE-2026-12817

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 5 NVT checks for CVE-2026-12817. 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='1.3.6.1.4.1.25623.1.1.18.1.2026.11445.1' details='1'/>"

NVT OIDs (5)

1.3.6.1.4.1.25623.1.1.18.1.2026.11445.1since 2026-08-07
1.3.6.1.4.1.25623.1.1.18.1.2026.21538.1since 2026-08-11
1.3.6.1.4.1.25623.1.1.4.2026.23127.1since 2026-08-18
1.3.6.1.4.1.25623.1.1.4.2026.23150.1since 2026-08-18
1.3.6.1.4.1.25623.1.1.4.2026.3559.1since 2026-08-14

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