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CVE-2025-6391

JSON Web Token (JWT) Exposure in Log Files

Published: Jul 17, 2025Updated: Feb 2, 2026 Sources: CVE List NVDCWE-532
9.8CRITICAL
NVD MITRE
EPSS Score
0.2%
Top 85.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Brocade ASCG before 3.3.0 logs JSON Web Tokens (JWT) in log files. An attacker with access to the log files can withdraw the unencrypted tokens with security implications, such as unauthorized access, session hijacking, and information disclosure.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-532

Affected Products

Broadcom
commercial·USaka broadcom inc
Brocade ASCGSaaSSaaS Service
Cloud & SaaS / saas-application
brocade
commercial·USaka fabric os, sannav
ascgOn-premNetwork Device
Networking Infrastructure / network-management

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Credential Access
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References

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/35951
support.broadcom.com

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