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How to verify CVE-2026-31431

Confirm whether your systems are actually affected — run the exact detection check below (Nuclei command or OpenVAS NVT). Detection only; it does not exploit.

How to verify this vulnerability

Scanner data tells you how to confirm whether your systems are actually affected — not just that the CVE exists. Run a Nuclei template against your target for a yes/no answer in seconds.

What's a Nuclei template? Nuclei is a free, open-source scanner. A template is a small YAML rule that probes a target and reports whether it's vulnerable. Runs locally, no agent.
1 · AUTOMATEDDetection command
nuclei -id CVE-2026-31431 -u https://your-target -rl 50 -timeout 10

Runs against your own host. Don't have Nuclei? Install guide ↗

1 Nuclei template
  • highOfficialVerifiedcodeCopy Fail - Linux Kernel Local Privilege Escalation via AF_ALGGitHub ↗

Find every CVE you can verify

Search the whole database by Nuclei coverage — filter by vendor, severity and KEV to build a verification list for your entire stack.

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This template is on GitHub already — an account lets you search and filter every CVE that has one, not just this CVE.

Nuclei References

Verify with OpenVAS

Greenbone/OpenVAS ships 130 NVT checks for CVE-2026-31431. 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='1.3.6.1.4.1.25623.1.0.118853' details='1'/>"
NVT OIDs (130)
  • 1.3.6.1.4.1.25623.1.0.118853since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.138100since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.157038since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.157039since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.157040since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.157252since 2026-07-15
  • 1.3.6.1.4.1.25623.1.0.157474since 2026-07-23
  • 1.3.6.1.4.1.25623.1.0.157475since 2026-07-23
  • 1.3.6.1.4.1.25623.1.0.180141since 2026-06-25
  • 1.3.6.1.4.1.25623.1.0.180254since 2026-06-25

+ 120 more NVTs

New to OpenVAS? Greenbone documentation ↗
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