What’s Vulnerable › Vulnerabilities

CVE-2025-61974: BIG-IP SSL/TLS vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-15 · updated 2026-10-18
• Weakness: CWE-401

Description

When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 BIG-IP Next CNF: from 1.1.0 through 1.4.1; from 2.0.0 through 2.1.0
• F5 BIG-IP Next for Kubernetes: 2.0.0, 2.1.0
• F5 BIG-IP Next SPK: from 1.7.0 through 1.9.2; from 2.0.0 through 2.0.2

References

• https://my.f5.com/manage/s/article/K000156733

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