Vulnerability details
CVE-2026-45393
Cribl Edge
Local privilege escalation to SYSTEM in Cribl Edge for Windows
CVSS 4.0
8.5High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.5High | 4.0 | CVEProject cvelistV5 (CNA) (Cribl) | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 9.8Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Cribl) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Cribl | Cribl Edge | v < 4.17.1 | CVEProject cvelistV5 (CNA) |
References and advisories
2- https://docs.cribl.io/edge/release-notes/release-v4171#security-fixes release-notes
- https://trust.cribl.io/notifications vendor-advisory
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Details
- Published
- 2026-05-12
- Last updated
- 2026-06-02
- State
- Published
- Assigner (CNA)
- Cribl
Exploit prediction (EPSS)
0.22%
Probability of exploitation in 30 days
12.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-276Incorrect Default Permissions
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
- CWE-20Improper Input Validation