CVE-2025-61974
published 2025-10-15CVE-2025-61974: When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions…
PriorityP343high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.43%
34.9th percentile
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
20 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| f5 | big-ip | >= 15.1.0 < 15.1.10.8 | 15.1.10.8 |
| f5 | big-ip | >= 16.1.0 < 16.1.6.1 | 16.1.6.1 |
| f5 | big-ip | >= 17.1.0 < 17.1.3 | 17.1.3 |
| f5 | big-ip | >= 17.5.0 < 17.5.1.3 | 17.5.1.3 |
| f5 | big-ip_next_cloud-native_network_functions | 1.1.0 – 1.4.1 | — |
| f5 | big-ip_next_cloud-native_network_functions | 2.0.0 – 2.1.0 | — |
| f5 | big-ip_next_cnf | — | — |
| f5 | big-ip_next_cnf | >= 1.1.0 < * | * |
| f5 | big-ip_next_cnf | >= 2.0.0 < * | * |
| f5 | big-ip_next_for_kubernetes | — | — |
| f5 | big-ip_next_for_kubernetes | — | — |
| f5 | big-ip_next_for_kubernetes | — | — |
| f5 | big-ip_next_for_kubernetes | >= 2.0.0 < * | * |
| f5 | big-ip_next_service_proxy_for_kubernetes | — | — |
| f5 | big-ip_next_service_proxy_for_kubernetes | 1.7.0 – 1.9.2 | — |
| f5 | big-ip_next_service_proxy_for_kubernetes | 2.0.0 – 2.0.2 | — |
| f5 | big-ip_next_spk | >= 1.7.0 < * | * |
| f5 | big-ip_next_spk | >= 1.8.0 < * | * |
| f5 | big-ip_next_spk | >= 1.9.0 < * | * |
| f5 | big-ip_next_spk | >= 2.0.0 < * | * |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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F5
CVE-2025-61974: When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory res...
vendor_f5·2025-10-15·CVSS 7.5
CVE-2025-61974 [HIGH] CWE-401 CVE-2025-61974: When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory res...
CVE-2025-61974: When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory res...
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: BIG-IP Next CNF, Big-Ip Next For Kubernetes, Big-Ip Next Service Proxy For Kubernetes
Affected Versions: 1.1.0 - 1.4.1; 1.7.0 - 1.9.2; 2.0.0; 2.0.0 - 2.0.2; 2.0.0 - 2.1.0; 2.1.0
F5 Advisory Articles: K000156733
F5 References: https://my.f5.com/manage/s/article/K000156733
GHSA
GHSA-j8fr-j6mp-3j67: When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization
ghsa_unreviewed·2025-10-15
CVE-2025-61974 [HIGH] CWE-401 GHSA-j8fr-j6mp-3j67: When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization
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.
No detection rules found.
No public exploits indexed.
Qualys
A Strategic Response to the F5 BIG-IP Nation-State Breach 2025
blogs_qualys·2025-10-18
A Strategic Response to the F5 BIG-IP Nation-State Breach 2025
## Table of Contents
CISAs KEV Inclusion Underscores the Severity of the F5 BIG-IP Breach
The Risk-Velocity Mismatch: F5 Patching Decelerates as Attacker Insight Accelerates
How Qualys Helps You Discover F5 Assets and Detect Related Vulnerabilities
Conclusion
In mid-October 2025, the cybersecurity landscape was dealt a severe blow. F5 disclosed a long-term, sophisticated breach by a nation-state threat actor. This incident exposed critical F5 BIG-IP vulnerabilities and triggered heightened scrutiny across enterprise edge infrastructure.
This was not a typical vulnerability disclosure. The attackers exfiltrated a strategic critical pair of assets: portions of BIG-IP source code, and internal details of undisclosed (unpatched) vulnerabilities.
## CISA’s KEV Inclusion Underscores the S
Qualys
F5 BIG-IP Vulnerabilities: Strategic Breach Response with Qualys | Qualys
blogs_qualys·2025-10-18
F5 BIG-IP Vulnerabilities: Strategic Breach Response with Qualys | Qualys
#### Table of Contents
- CISAs KEV Inclusion Underscores the Severity of the F5 BIG-IP Breach
- The Risk-Velocity Mismatch: F5 Patching Decelerates as Attacker Insight Accelerates
- How Qualys Helps You Discover F5 Assets and Detect Related Vulnerabilities
- Conclusion
In mid-October 2025, the cybersecurity landscape was dealt a severe blow. F5 disclosed a long-term, sophisticated breach by a nation-state threat actor. This incident exposed critical F5 BIG-IP vulnerabilities and triggered heightened scrutiny across enterprise edge infrastructure.
This was not a typical vulnerability disclosure. The attackers exfiltrated a strategic critical pair of assets: portions of BIG-IP source code, and internal details of undisclosed (unpatched) vulnerabilities.
## CISA’s KEV Inclusion Underscore
Tenable
FAQ on F5 Security Incident
blogs_tenable·2025-10-15
FAQ on F5 Security Incident
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Wiz
CVE-2026-20732 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 8.7
CVE-2026-20732 [HIGH] CVE-2026-20732 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-20732 :
F5 BIG-IP Virtual Edition vulnerability analysis and mitigation
A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Source : NVD
## 2.3
Score
Published February 4, 2026
Severity LOW
CNA Score 2.3
Affected Technologies
F5 BIG-IP Virtual Edition
F5 BIG-IP Virtual Edition (tier - better)
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 17.3
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
cpe:2.3:a:f5:big-ip_access_policy_manager
cpe:2.3:a:f5:big-ip_application_security_manager
S
2025-10-15
Published