CVE-2025-53856

Severity CVSS v4.0:

HIGH

Type:

Unavailable / Other

Publication date:

15/10/2025

Last modified:

21/10/2025

Description

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.

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 8.70 HIGH
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0

8.70

Severity 4.0

HIGH

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:f5:big-ip_access_policy_manager::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_analytics::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_application_acceleration_manager::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_application_security_manager::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_application_visibility_and_reporting::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_automation_toolchain::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_carrier-grade_nat::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_container_ingress_services::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_domain_name_system::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_edge_gateway::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_fraud_protection_service::::::::	15.1.0 (including)	15.1.10.8 (excluding)
cpe:2.3:a:f5:big-ip_global_traffic_manager::::::::	15.1.0 (including)	15.1.10.8 (excluding)

To consult the complete list of CPE names with products and versions, see this page

References to Advisories, Solutions, and Tools

https://my.f5.com/manage/s/article/K000156707