Vulnerability · Published Jul 17, 2025 · Assigned by brocade
CVE-2025-6391JSON Web Token (JWT) Exposure in Log Files
High 7.1
In plain English
A high-severity sensitive data in logs in Brocade ASCG from Broadcom. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.3%top 81.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Broadcom | Brocade ASCG | before 3.3.0 |
Weakness: CWE-532 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N