Summary
Ein Angreifer kann mehrere Schwachstellen in F5 BIG-IP und F5 F5OS ausnutzen, um Sicherheitsmechanismen zu umgehen, seine Privilegien zu erhöhen, einen Denial-of-Service-Zustand (DoS) herbeizuführen, einen Cross-Site-Scripting-Angriff (XSS) durchzuführen und Informationen offenzulegen oder zu manipulieren, sowie um Code auszuführen.
Product
BIG-IP ist eine Netzwerk Appliance auf der die meisten F5 Produkte laufen.
F5OS ist ein modulares Betriebssystem von F5 Networks, das für den Einsatz auf deren Hardware-Plattformen konzipiert ist.
Vulnerabilities 44
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Critical 9.8CVE-2025-53521 Exploited
BigIP APM Vulnerability
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.
KEV Mar 27, 2026 -
High 8.7
BIG-IP SCP and SFTP vulnerability
When running in Appliance mode, a highly privileged authenticated attacker with access to SCP and SFTP may be able to bypass Appliance mode restrictions using undisclosed commands. Note: Software versions which have reached End of Technical Support (EoTS) ar…
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High 7.8
F5OS Vulnerability
A vulnerability exists in F5OS-A and F5OS-C system that may allow an authenticated attacker with local access to escalate their privileges. A successful exploit may allow the attacker to cross a security boundary. Note: Software versions which have reached …
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High 7.8
F5OS vulnerability
A vulnerability exists in F5OS-A and F5OS-C systems that may allow an authenticated attacker with local access to escalate their privileges. A successful exploit may allow the attacker to cross a security boundary. Note: Software versions which have reached…
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High 7.5
BIG-IP SSL Orchestrator vulnerability
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.
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High 7.5
BIG-IP iRules vulnerability
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.
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High 7.5
BIG-IP MPTCP vulnerability
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 ha…
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High 7.5
BIG-IP iRules vulnerability
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.
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High 7.5
TMM vulnerability
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 termi…
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High 7.5
BIG-IP PEM vulnerability
When a classification profile is configured on a virtual server without an HTTP or HTTP/2 profile, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS)…
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High 7.5
BigIP APM Vulnerability
When a BIG-IP APM OAuth access profile (Resource Server or Resource Client) is configured on a virtual server, undisclosed traffic can cause the apmd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not eva…
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High 7.5
BIG-IP Advanced WAF and ASM vulnerability
When a BIG-IP Advanced WAF or BIG-IP ASM Security Policy is configured with a JSON content profile that has a malformed JSON schema, and the security policy is applied to a virtual server, undisclosed requests can cause the bd process to terminate. Note: Sof…
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High 7.5
BIG-IP SSL Orchestrator vulnerability
When BIG-IP SSL Orchestrator explicit forward proxy is configured on a virtual server and the proxy connect feature is enabled, undisclosed traffic may cause memory corruption. Note: Software versions which have reached End of Technical Support (EoTS) are no…
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High 7.5
BIG-IP HTTP/2 vulnerability
When the BIG-IP Advanced WAF and ASM security policy and a server-side HTTP/2 profile are configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of T…
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High 7.5
BIG-IP IPSec vulnerability
When IPsec is configured on the BIG-IP system, 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.
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High 7.5
BIG-IP TMM vulnerability
When the database variable tm.tcpudptxchecksum is configured as non-default value Software-only on a BIG-IP system, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technic…
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High 7.5
BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability
When HTTP/2 Ingress is configured, 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.
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High 7.5
BIG-IP AFM DoS protection profile vulnerability
When a BIG-IP AFM denial-of-service (DoS) protection profile is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support …
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High 7.5
VELOS partition container network vulnerability
When the Allowed IP Addresses feature is configured on the F5OS-C partition control plane, undisclosed traffic can cause multiple containers to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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High 7.5
BIG-IP DNS cache vulnerability
When DNS cache is configured on a BIG-IP or BIG-IP Next CNF virtual server, undisclosed DNS queries can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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High 7.5
BIG-IP SSL/TLS vulnerability
When Diffie-Hellman (DH) group Elliptic Curve Cryptography (ECC) Brainpool curves are configured in an SSL profile's Cipher Rule or Cipher Group, and that profile is applied to a virtual server, undisclosed traffic can cause the Traffic Management Microkernel…
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High 7.5
BIG-IP Advanced WAF and ASM vulnerability
When a BIG IP Advanced WAF or ASM security policy is configured on a virtual server, undisclosed requests can cause the bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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High 7.5
BIG-IP Advanced WAF and ASM bd process vulnerability
When a BIG-IP Advanced WAF or ASM security policy is configured with a URL greater than 1024 characters in length for the Data Guard Protection Enforcement setting, either manually or through the automatic Policy Builder, the bd process can terminate repeated…
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High 7.5
BIG-IP DTLS 1.2 Vulnerability
Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. This issue may occur when a Datagram Transport Layer Security (DTLS) 1.2 virtual server is enabled with a Server SSL profile that is configured with a certificate, key, and …
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High 7.5
BIG-IP APM portal access vulnerability
When a per-request policy is configured on a BIG-IP APM portal access 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 eval…
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High 7.5
BIG-IP SSL/TLS vulnerability
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.
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High 7.5
TMM vulnerability
When using a multi-bladed platform with more than one blade, 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.
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Medium 6.5
BIG-IP APM and SSL Orchestrator vulnerability
When the BIG-IP system is configured as both a Security Assertion Markup Language (SAML) service provider (SP) and Identity Provider (IdP), with single logout (SLO) enabled on an access policy, undisclosed requests can cause an increase in memory resource uti…
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Medium 6.5
F5OS SNMP vulnerability
When SNMP is configured on F5OS Appliance and Chassis systems, undisclosed requests can cause an increase in SNMP memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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Medium 6.5
TMM Vulnerability
When an iRule is configured on a virtual server via the declarative API, upon re-instantiation, the cleanup process can cause an increase in the Traffic Management Microkernel (TMM) memory resource utilization. Note: Software versions which have reached End …
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Medium 6.5
BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability
On BIG-IP Next CNF, BIG-IP Next SPK, and BIG-IP Next for Kubernetes systems, repeated undisclosed API calls can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not ev…
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Medium 6.5
BIG-IP iControl REST and tmsh vulnerability
A vulnerability exists in an undisclosed iControl REST and BIG-IP TMOS Shell (tmsh) command that may allow an authenticated attacker with at least resource administrator role to execute arbitrary system commands with higher privileges. A successful exploit c…
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Medium 6.5
BIG-IP Configuration utility and tmsh vulnerability
A validation vulnerability exists in an undisclosed URL in the Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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Medium 6.5
BIG-IP TMSH vulnerability
A vulnerability exists in the iHealth command that may allow an authenticated attacker with at least a resource administrator role to bypass tmsh restrictions and gain access to a bash shell. For BIG-IP systems running in Appliance mode, a successful exploit…
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Medium 6.1
BIG-IP Configuration utility XSS vulnerability
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. Note: Software versions which have reached End of T…
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Medium 6.1
BIG-IP APM cross-site scripting (XSS) vulnerability
A reflected cross-site scripting (XSS) vulnerability exists in an undisclosed page of BIG-IP APM that allows an attacker to run JavaScript in the context of the targeted logged-out user. Note: Software versions which have reached End of Technical Support (Eo…
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Medium 5.9
BIG-IP HSB vulnerability
Under undisclosed traffic conditions along with conditions beyond the attacker's control, hardware systems with a High-Speed Bridge (HSB) may experience a lockup of the HSB. Note: Software versions which have reached End of Technical Support (EoTS) are not e…
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Medium 5.7
F5OS out-of-bounds write vulnerability
An out-of-bounds write vulnerability exists in F5OS-A and F5OS-C that could lead to memory corruption. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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Medium 5.3
BIG-IP TMM vulnerability
On BIG-IP systems, undisclosed traffic can cause data corruption and unauthorized data modification in protocols which do not have message integrity protection. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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Medium 5.3
BIG-IP Advanced WAF and ASM and NGINX App Protect DNS lookup vulnerability
When BIG-IP Advanced WAF is configured on a virtual server with Server-Side Request Forgery (SSRF) protection or when an NGINX server is configured with App Protect Bot Defense, undisclosed requests can disrupt new client requests. Note: Software versions wh…
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Medium 5.3
BIG-IP Configuration utility vulnerability
On the BIG-IP system, undisclosed endpoints that contain static non-sensitive information are accessible to an unauthenticated remote attacker through the Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are n…
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Medium 4.9
BIG-IP Configuration utility vulnerability
A directory traversal vulnerability exists in TMUI that allows a highly privileged authenticated attacker to access files which are not limited to the intended files. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluate…
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Medium 4.6CVE-2025-60013 Public exploit
F5OS-A FIPS HSM password vulnerability
When a highly-privileged, authenticated attacker attempts to initialize the rSeries FIPS module using a password with special shell metacharacters, arbitrary system commands may be executed, and the FIPS hardware security module (HSM) may fail to initialize. …
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Medium 4.1
F5OS-A FIPS HSM vulnerability
A vulnerability exists in F5OS-A software that allows a highly privileged authenticated attacker to access sensitive FIPS hardware security module (HSM) information on F5 rSeries systems. Note: Software versions which have reached End of Technical Support (E…
Revision history
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#4
CVE-2025-53521 von F5 neu bewertet, Codeausführung möglich
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#3
Aktive Ausnutzung gemeldet
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#2
Referenz(en) aufgenommen: EUVD-2025-34622
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#1
Initiale Fassung
References
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F5 Quarterly Security Notification October 2025 vom 2025-10-15
https://my.f5.com/manage/s/article/K000156572
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F5 Security Incident Notification vom 2025-10-15
https://my.f5.com/manage/s/article/K000154696
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CISA Known Exploited Vulnerabilities Catalog vom 2026-03-29
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
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National Vulnerability Database CVE-2025-53521 vom 2026-03-31
https://nvd.nist.gov/vuln/detail/CVE-2025-53521
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F5 Security Advisory K000156741 vom 2026-04-01
https://my.f5.com/manage/s/article/K000156741