F5 vulnerabilities
We track 249 vulnerabilities in F5 products across 60+ products. 248 are rated high or critical, and 14 have been exploited in real attacks. The most recent was published on October 14, 2026.
Latest F5 vulnerabilities
- 9.8 Critical severity
F5 BIG-IP Stack-Based Buffer Overflow Exploited
When a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE). Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: Buffer Copy without Checking Size of Input
When an iRule using an ILX::call command is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: Use After Free
When a TCP profile with Multipath TCP (MPTCP) enabled is configured on a virtual server, undisclosed traffic along with conditions beyond the attacker's control can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have
- 7.5 High severity
BIG-IP: Allocation of Resources Without Limits or Throttling
When an iRule containing the HTTP::respond command 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.
- 7.5 High severity
BIG-IP: Allocation of Resources Without Limits or Throttling
When BIG-IP SSL Orchestrator is enabled, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.4 High severity
F5 Access: Improper Certificate Validation
F5 Access for Android before version 3.1.2 which uses HTTPS does not verify the remote endpoint identity. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: NULL Pointer Dereference
When a BIG-IP LTM Client SSL profile is configured on a virtual server with SSL Forward Proxy enabled and Anonymous Diffie-Hellman (ADH) ciphers enabled, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versi
- 7.3 High severity
BIG-IP Edge Client: Missing Support for Integrity Check
A missing file integrity check vulnerability exists on MacOS F5 VPN browser client installer that may allow a local, authenticated attacker with access to the local file system to replace it with a malicious package installer. Note: Software versions which hav
- 7.5 High severity
BIG-IP: Stack-based Buffer Overflow
When Network Access is configured on a BIG-IP APM virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 8.8 High severity
F5OS - Appliance: Incorrect Authorization
On F5OS, an improper authorization vulnerability exists where remotely authenticated users (LDAP, RADIUS, TACACS+) may be authorized with higher privilege F5OS roles. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: NULL Pointer Dereference
When a Session Initiation Protocol (SIP) message routing framework (MRF) application layer gateway (ALG) profile is configured on a Message Routing virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Soft
- 7.5 High severity
BIG-IP: Out-of-bounds Write
When connection mirroring is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate in the standby BIG-IP systems in a traffic group. Note: Software versions which have reached End of Technical Supp
- 7.5 High severity
BIG-IP: NULL Pointer Dereference
When HTTP/2 client and server profile is configured on a virtual server, undisclosed requests can cause TMM to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
- 7.5 High severity
BIG-IP: Improper Resource Shutdown or Release
When a Stream Control Transmission Protocol (SCTP) 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 evaluate
- 7.5 High severity
BIG-IP: Buffer Copy without Checking Size of Input
When an HTTP profile with the Enforce RFC Compliance option is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are
- 8.1 High severity
F5OS - Appliance: Incorrect Authorization
On an F5OS system, if the root user had previously configured the system to allow login via SSH key-based authentication, and then enabled Appliance Mode; access via SSH key-based authentication is still allowed. For an attacker to exploit this vulnerability t
- 7.5 High severity
BIG-IP: Buffer Copy without Checking Size of Input
When a BIG-IP APM virtual server is configured to use a PingAccess profile, undisclosed requests can cause TMM to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: Allocation of Resources Without Limits or Throttling
When a BIG-IP HTTP/2 httprouter profile is configured on a virtual server, undisclosed responses can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: Out-of-bounds Read
When a BIG-IP PEM system is licensed with URL categorization, and the URL categorization policy or an iRule with the urlcat command is enabled on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Soft
- 8.7 High severity
BIG-IP: Improper Neutralization of Special Elements used in a Command
When running in Appliance mode, a command injection vulnerability exists in an undisclosed iControl REST and BIG-IP TMOS Shell (tmsh) command which may allow an authenticated attacker with administrator role privileges to execute arbitrary system commands. A s
- 7.5 High severity
BIG-IP: Out-of-bounds Read
When URL categorization is configured on a virtual server, undisclosed requests can cause TMM to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: Out-of-bounds Write
When BIG-IP Advanced WAF/ASM Behavioral DoS (BADoS) TLS Signatures feature is configured, undisclosed traffic can case an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 8.0 High severity
BIG-IP: Improper Neutralization of Input During Web Page Generation
A stored cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Configuration utility that allows an attacker to run JavaScript in the context of the currently logged-in user. This vulnerability is due to an incomplete fix for CVE
- 7.5 High severity
BIG-IP: Allocation of Resources Without Limits or Throttling
When BIG-IP AFM is provisioned with IPS module enabled and protocol inspection profile is configured on a virtual server or firewall rule or policy, undisclosed traffic can cause an increase in CPU resource utilization. Note: Software versions which have reach
- 7.5 High severity
BIG-IP: Buffer Copy without Checking Size of Input
When BIG-IP APM Access Profile is configured on a virtual server, undisclosed request can cause TMM to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 8.7 High severity
BIG-IP: Improper Neutralization of Special Elements used in a Command
When running in Appliance mode, and logged into a highly-privileged role, an authenticated remote command injection vulnerability exists in an undisclosed iControl REST endpoint. A successful exploit can allow the attacker to cross a security boundary. Note: S
- 7.5 High severity
BIG-IP: Missing Release of Resource after Effective Lifetime
When BIG-IP PEM Control Plane listener Virtual Server is configured with Diameter Endpoint profile, undisclosed traffic can cause the Virtual Server to stop processing new client connections and an increase in memory resource utilization. Note: Software versio
- 7.5 High severity
BIG-IP: Improper Resource Shutdown or Release
When SIP Session and Router ALG profiles are configured on a Message Routing type virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) ar
- 7.5 High severity
BIG-IP: Missing Release of Memory after Effective Lifetime
When SNMP v1 or v2c are disabled on the BIG-IP, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
- 7.5 High severity
BIG-IP: Uncontrolled Resource Consumption
When Client or Server SSL profiles are configured on a Virtual Server, or DNSSEC signing operations are in use, undisclosed traffic can cause an increase in memory and CPU resource utilization. Note: Software versions which have reached End of Technical Suppor
- 7.5 High severity
BIG-IP: Uncontrolled Resource Consumption
When a BIG-IP message routing profile is configured on a virtual server, undisclosed traffic can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
- 7.5 High severity
BIG-IP: NULL Pointer Dereference
When SIP session Application Level Gateway mode (ALG) profile with Passthru Mode enabled and SIP router ALG profile are configured on a Message Routing type virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. No
- 8.8 High severity
BIG-IP: Improper Neutralization of Special Elements used in an OS Command
Command injection vulnerability exists in iControl REST and BIG-IP TMOS Shell (tmsh) save command, which may allow an authenticated attacker to execute arbitrary system commands. Note: Software versions which have reached End of Technical Support (EoTS) are no
- 7.2 High severity
BIG-IP: Missing Authentication for Critical Functionality
BIG-IP monitor functionality may allow an attacker to bypass access control restrictions, regardless of the port lockdown settings. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: Allocation of Resources Without Limits or Throttling
In BIG-IP tenants running on r2000 and r4000 series hardware, or BIG-IP Virtual Edition (VEs) using Intel E810 SR-IOV NIC, undisclosed traffic can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Sup
- 7.5 High severity
BIG-IP: NULL Pointer Dereference
When TCP profile with Multipath TCP enabled (MPTCP) is configured on a Virtual Server, undisclosed traffic along with conditions beyond the attackers control can cause TMM to terminate. Note: Software versions which have reached End of Technical Support (EoTS)
- 8.8 High severity
The Central Manager user session refresh token does not expire when a user logs out.
The Central Manager user session refresh token does not expire when a user logs out. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
- 7.5 High severity
NGINX Plus: Operation on a Resource after Expiration or Release
When the NGINX Plus is configured to use the MQTT pre-read module, undisclosed requests can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
When a stateless virtual server is configured on BIG-IP system with a High-Speed Bridge (HSB)…
When a stateless virtual server is configured on BIG-IP system with a High-Speed Bridge (HSB), undisclosed requests can cause TMM to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- 7.5 High severity
BIG-IP: Access of Uninitialized Pointer
When IPsec is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.