F5 BIG-IP SAML SLO Causes Memory Leak
CVE-2025-47148 Published on October 15, 2025
BIG-IP APM and SSL Orchestrator vulnerability
When the BIG-IP system is configured as both a Security Assertion Markup Language (SAML) service provider (SP) and Identity Provider (IdP), with single logout (SLO) enabled on an access policy, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability Analysis
CVE-2025-47148 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Improper Resource Shutdown or Release
The program does not release or incorrectly releases a resource before it is made available for re-use. When a resource is created or allocated, the developer is responsible for properly releasing the resource as well as accounting for all potential paths of expiration or invalidation, such as a set period of time or revocation.
Products Associated with CVE-2025-47148
Want to know whenever a new CVE is published for F5 Networks Big Ip? stack.watch will email you.
Affected Versions
F5 BIG-IP:- Version 17.5.0 and below 17.5.1 is affected.
- Version 17.1.0 and below 17.1.3 is affected.
- Version 16.1.0 and below 16.1.6.1 is affected.
- Version 15.1.0 and below 15.1.10.8 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.