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

> CVE-2026-45393: Local privilege escalation to SYSTEM in Cribl Edge for Windows. CVSS 7.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-45393
Last updated: 2026-06-17T10:52:00Z

- Published: 2026-05-12 01:06 UTC · Updated: 2026-06-17 10:52 UTC · Assigner: Cribl
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 0.22%, 13th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-276, CWE-78

## 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.

## Affected vendors and products

- Cribl: Cribl Edge

## Tracked companies

- [Cribl](https://rewindex.com/company/cribl.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-45393)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-45393)
- [https://docs.cribl.io/edge/release-notes/release-v4171\#security-fixes](https://docs.cribl.io/edge/release-notes/release-v4171#security-fixes)
- [https://trust.cribl.io/notifications](https://trust.cribl.io/notifications)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-45393 · Markdown: https://rewindex.com/cve/CVE-2026-45393.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-45393 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:59.223Z