CVE-2026-45393CRITICAL 7.8EPSS p12.4%

CVE-2026-45393CVE-2026-45393

Description

A vulnerability chain in Cribl Edge for Windows before 4.17.1 allows a local authenticated user to escalate privileges to NT AUTHORITY\SYSTEM. Incorrect default permissions on the Windows installer's authentication directory (CWE-276) expose a cryptographic secret used for JWT signing and password-hash derivation, enabling forgery of administrative API tokens. The forged token can then be used to invoke a pipeline function that reaches an OS command sink (CWE-78) running in the SYSTEM context.

Scoring

CVSS 3.17.8 (CRITICAL)
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.22% probability of exploitation · percentile 12.4% · 2026-06-18T12:00:27Z
Published2026-05-12
Last modified2026-06-02

Underlying weaknesses· 1

CWE-20

References

  1. https://docs.cribl.io/edge/release-notes/release-v4171#security-fixes
  2. https://trust.cribl.io/notifications

1

TypeTargetConfidenceTier
WeaknessImproper Input Validationcwe-200%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.