Paper/Archive/CVE-2026-45393

CVE-2026-45393

Cribl Cribl Edge — Local privilege escalation to SYSTEM in Cribl Edge for Windows

CVSS 9.8 (ADP)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 12.7.127 × 202.5 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

Cribl Edge< 4.17.14.17.1CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Cribl (CNA)8.5CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Cribl (CNA)7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refdocs.cribl.io/edge/release-notes/release-v4171#security-fixes advisorytrust.cribl.io/notifications