CVE-2025-53856
published 2025-10-15CVE-2025-53856: When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object uses the embedded Packet Velocity…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.33%
25.2th percentile
When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object uses the embedded Packet Velocity Acceleration (ePVA) feature, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. To determine which BIG-IP platforms have an ePVA chip refer to K12837: Overview of the ePVA feature https://my.f5.com/manage/s/article/K12837 . Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected
108 ranges· showing 25
| 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_aam | — | — |
| f5 | big-ip_access_policy_manager | >= 15.1.0 < 15.1.10.8 | 15.1.10.8 |
| f5 | big-ip_access_policy_manager | >= 16.1.0 < 16.1.6.1 | 16.1.6.1 |
| f5 | big-ip_access_policy_manager | >= 17.1.0 < 17.1.3 | 17.1.3 |
| f5 | big-ip_access_policy_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_advanced_firewall_manager | >= 15.1.0 < 15.1.10.8 | 15.1.10.8 |
| f5 | big-ip_advanced_firewall_manager | >= 16.1.0 < 16.1.6.1 | 16.1.6.1 |
| f5 | big-ip_advanced_firewall_manager | >= 17.1.0 < 17.1.3 | 17.1.3 |
| f5 | big-ip_advanced_firewall_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_advanced_waf | — | — |
| f5 | big-ip_advanced_web_application_firewall | >= 15.1.0 < 15.1.10.8 | 15.1.10.8 |
| f5 | big-ip_advanced_web_application_firewall | >= 16.1.0 < 16.1.6.1 | 16.1.6.1 |
| f5 | big-ip_advanced_web_application_firewall | >= 17.1.0 < 17.1.3 | 17.1.3 |
| f5 | big-ip_advanced_web_application_firewall | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_afm | — | — |
| f5 | big-ip_analytics | — | — |
| f5 | big-ip_analytics | >= 15.1.0 < 15.1.10.8 | 15.1.10.8 |
| f5 | big-ip_analytics | >= 16.1.0 < 16.1.6.1 | 16.1.6.1 |
| f5 | big-ip_analytics | >= 17.1.0 < 17.1.3 | 17.1.3 |
| f5 | big-ip_analytics | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_apm | — | — |
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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GHSA
GHSA-m5hq-gxg5-5f9x: When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object uses the embedded Packet Velocity
ghsa_unreviewed·2025-10-15
CVE-2025-53856 [HIGH] CWE-705 GHSA-m5hq-gxg5-5f9x: When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object uses the embedded Packet Velocity
When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object uses the embedded Packet Velocity Acceleration (ePVA) feature, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. To determine which BIG-IP platforms have an ePVA chip refer to K12837: Overview of the ePVA feature https://my.f5.com/manage/s/article/K12837 . Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
F5
CVE-2025-53856: When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object ...
vendor_f5·2025-10-15·CVSS 7.5
CVE-2025-53856 [HIGH] CWE-705 CVE-2025-53856: When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object ...
CVE-2025-53856: When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object ...
When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object uses the embedded Packet Velocity Acceleration (ePVA) feature, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. To determine which BIG-IP platforms have an ePVA chip refer to K12837: Overview of the ePVA feature https://my.f5.com/manage/s/article/K12837 . Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected Products: BIG-IP AAM, BIG-IP AFM, BIG-IP APM, BIG-IP ASM, BIG-IP AVR, BIG-IP Advanced WAF, BIG-IP Analytics, BIG-IP CGNAT, BIG-IP DHD, BIG-IP DNS, BI
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
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## Identity Exposure
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## Business needs
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2025-10-15
Published