CVE-2026-45393 HIGH

CVE-2026-45393: Local privilege escalation to SYSTEM in Cribl Edge for Windows

Vendor Cribl
Product Cribl Edge
Weakness CWE-276
Published May 12, 2026
Last update June 2, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 12, 2026 CVE published
June 2, 2026 Record updated