# F5 BIG-IP vulnerabilities

Source: https://junglewise.ai/threats/technologies/big-ip  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/big-ip.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 41 vulnerabilities in F5 BIG-IP: 0 in the last 7 days and 2 in the last 90 days, 5 of them critical and 5 exploited in the wild. The most recent, CVE-2026-66842, was published on 2 September 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 2
- All time: 41 (5 critical, 5 exploited in the wild)

## About F5 BIG-IP

F5 BIG-IP is an application delivery controller and load balancing platform.

## Latest F5 BIG-IP vulnerabilities

- [CVE-2026-66842: F5 BIG-IP privilege escalation in TMUI](https://junglewise.ai/threats/cve-2026-66842-f5-big-ip-privilege-escalation-in-tmui) (high, CVSS 8.8, published 2 Sep 2026)
- [CVE-2026-63020: F5 BIG-IP Configuration utility error message spoofing](https://junglewise.ai/threats/cve-2026-63020-f5-big-ip-configuration-utility-error-message-spoofing) (low, CVSS 3.1, published 2 Sep 2026)
- [CVE-2026-59762: F5 BIG-IP denial of service in HTTP/2 profile memory management](https://junglewise.ai/threats/cve-2026-59762-f5-big-ip-denial-of-service-in-http-2-profile-memory-management) (high, CVSS 7.5, published 15 Jul 2026)
- [CVE-2026-42937: F5 BIG-IP and BIG-IQ incorrect permission assignment in tmsh and iControl REST](https://junglewise.ai/threats/cve-2026-42937-f5-big-ip-and-big-iq-incorrect-permission-assignment-in-tmsh-and) (medium, CVSS 6.5, published 13 May 2026)
- [CVE-2026-42930: F5 BIG-IP Appliance mode restriction bypass via path traversal](https://junglewise.ai/threats/cve-2026-42930-f5-big-ip-appliance-mode-restriction-bypass-via-path-traversal) (high, CVSS 8.7, published 13 May 2026)
- [CVE-2026-42924: F5 BIG-IP privilege escalation in iControl SOAP via SNMP configuration](https://junglewise.ai/threats/cve-2026-42924-f5-big-ip-privilege-escalation-in-icontrol-soap-via-snmp) (high, CVSS 8.7, published 13 May 2026)
- [CVE-2026-42920: F5 BIG-IP DoS in TMM via Client SSL Dynamic Record Sizing](https://junglewise.ai/threats/cve-2026-42920-f5-big-ip-dos-in-tmm-via-client-ssl-dynamic-record-sizing) (high, CVSS 7.5, published 13 May 2026)
- [CVE-2026-42919: F5 BIG-IP privilege escalation in multiple modules](https://junglewise.ai/threats/cve-2026-42919-f5-big-ip-privilege-escalation-in-multiple-modules) (medium, CVSS 6.7, published 13 May 2026)
- [CVE-2026-42781: F5 BIG-IP resource exhaustion in ePVA acceleration](https://junglewise.ai/threats/cve-2026-42781-f5-big-ip-resource-exhaustion-in-epva-acceleration) (medium, CVSS 6.5, published 13 May 2026)
- [CVE-2026-42409: F5 BIG-IP DoS via HTTP/2 iRule redirection](https://junglewise.ai/threats/cve-2026-42409-f5-big-ip-dos-via-http-2-irule-redirection) (high, CVSS 7.5, published 13 May 2026)
- [CVE-2026-42406: F5 BIG-IP and BIG-IQ privilege escalation in configuration objects](https://junglewise.ai/threats/cve-2026-42406-f5-big-ip-and-big-iq-privilege-escalation-in-configuration) (high, CVSS 8.7, published 13 May 2026)
- [CVE-2026-42058: F5 BIG-IP information leak in iControl REST](https://junglewise.ai/threats/cve-2026-42058-f5-big-ip-information-leak-in-icontrol-rest) (medium, CVSS 4.3, published 13 May 2026)
- [CVE-2026-41959: F5 BIG-IP and BIG-IQ incorrect permission assignment in tmsh and iControl REST](https://junglewise.ai/threats/cve-2026-41959-f5-big-ip-and-big-iq-incorrect-permission-assignment-in-tmsh-and) (medium, CVSS 6.5, published 13 May 2026)
- [CVE-2026-41957: F5 BIG-IP and BIG-IQ RCE in Configuration utility](https://junglewise.ai/threats/cve-2026-41957-f5-big-ip-and-big-iq-rce-in-configuration-utility) (high, CVSS 8.8, published 13 May 2026)
- [CVE-2026-41956: F5 BIG-IP stack overflow in Traffic Management Microkernel](https://junglewise.ai/threats/cve-2026-41956-f5-big-ip-stack-overflow-in-traffic-management-microkernel) (high, CVSS 7.5, published 13 May 2026)
- [CVE-2026-41954: F5 BIG-IP sensitive information disclosure in iControl REST and tmsh](https://junglewise.ai/threats/cve-2026-41954-f5-big-ip-sensitive-information-disclosure-in-icontrol-rest-and) (medium, CVSS 4.9, published 13 May 2026)
- [CVE-2026-41953: F5 BIG-IP privilege escalation via configuration object modification](https://junglewise.ai/threats/cve-2026-41953-f5-big-ip-privilege-escalation-via-configuration-object) (high, CVSS 8.7, published 13 May 2026)
- [CVE-2026-41227: On an HTTP/2 virtual server with Layer 7 DoS Protection configured, undisclosed traffic can result in an increase in…](https://junglewise.ai/threats/cve-2026-41227-on-an-http-2-virtual-server-with-layer-7-dos-protection) (high, CVSS 7.5, published 13 May 2026)
- [CVE-2026-41219: F5 BIG-IP improper sanitization in QKView utility](https://junglewise.ai/threats/cve-2026-41219-f5-big-ip-improper-sanitization-in-qkview-utility) (medium, CVSS 6.5, published 13 May 2026)
- [CVE-2026-40703: F5 BIG-IP CSRF in Configuration utility dashboard](https://junglewise.ai/threats/cve-2026-40703-f5-big-ip-csrf-in-configuration-utility-dashboard) (medium, CVSS 5.4, published 13 May 2026)
- [CVE-2026-40699: F5 BIG-IP XPath injection in Configuration utility](https://junglewise.ai/threats/cve-2026-40699-f5-big-ip-xpath-injection-in-configuration-utility) (medium, CVSS 6.5, published 13 May 2026)
- [CVE-2026-40698: F5 BIG-IP and BIG-IQ privilege escalation in SNMP configuration](https://junglewise.ai/threats/cve-2026-40698-f5-big-ip-and-big-iq-privilege-escalation-in-snmp-configuration) (high, CVSS 8.7, published 13 May 2026)
- [CVE-2026-40631: F5 BIG-IP privilege escalation in iControl SOAP](https://junglewise.ai/threats/cve-2026-40631-f5-big-ip-privilege-escalation-in-icontrol-soap) (high, CVSS 8.7, published 13 May 2026)
- [CVE-2026-40629: F5 BIG-IP denial of service in SSL-enabled virtual servers](https://junglewise.ai/threats/cve-2026-40629-f5-big-ip-denial-of-service-in-ssl-enabled-virtual-servers) (high, CVSS 7.5, published 13 May 2026)
- [CVE-2026-40618: F5 BIG-IP TMM denial of service in SSL profile processing](https://junglewise.ai/threats/cve-2026-40618-f5-big-ip-tmm-denial-of-service-in-ssl-profile-processing) (high, CVSS 7.5, published 13 May 2026)

## Most severe F5 BIG-IP vulnerabilities

- [CVE-2025-53521: F5 BIG-IP stack-based buffer overflow in APM](https://junglewise.ai/threats/cve-2025-53521-f5-big-ip-stack-based-buffer-overflow-in-apm) (critical, exploited in the wild, CVSS 9.8, published 15 Oct 2025)
- [CVE-2022-1388: F5 BIG-IP Missing Authentication Vulnerability](https://junglewise.ai/threats/cve-2022-1388-f5-big-ip-missing-authentication-vulnerability) (critical, exploited in the wild, CVSS 9.8, published 10 May 2022)
- [CVE-2021-22986: F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2021-22986-f5-big-ip-and-big-iq-centralized-management-icontrol-rest-remote) (critical, exploited in the wild, CVSS 9.8, published 3 Nov 2021)
- [CVE-2020-5902: F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2020-5902-f5-big-ip-traffic-management-user-interface-tmui-remote-code) (critical, exploited in the wild, CVSS 9.8, published 3 Nov 2021)
- [CVE-2018-14634: Linux Kernel integer overflow in create_elf_tables](https://junglewise.ai/threats/cve-2018-14634-linux-kernel-integer-overflow-in-create-elf-tables) (critical, exploited in the wild, CVSS 7.8, published 26 Jan 2026)
- [CVE-2026-41957: F5 BIG-IP and BIG-IQ RCE in Configuration utility](https://junglewise.ai/threats/cve-2026-41957-f5-big-ip-and-big-iq-rce-in-configuration-utility) (high, CVSS 8.8, published 13 May 2026)
- [CVE-2026-66842: F5 BIG-IP privilege escalation in TMUI](https://junglewise.ai/threats/cve-2026-66842-f5-big-ip-privilege-escalation-in-tmui) (high, CVSS 8.8, published 2 Sep 2026)
- [CVE-2026-34176: F5 BIG-IP command injection in iControl REST Appliance mode](https://junglewise.ai/threats/cve-2026-34176-f5-big-ip-command-injection-in-icontrol-rest-appliance-mode) (high, CVSS 8.7, published 13 May 2026)
- [CVE-2026-42930: F5 BIG-IP Appliance mode restriction bypass via path traversal](https://junglewise.ai/threats/cve-2026-42930-f5-big-ip-appliance-mode-restriction-bypass-via-path-traversal) (high, CVSS 8.7, published 13 May 2026)
- [CVE-2026-42924: F5 BIG-IP privilege escalation in iControl SOAP via SNMP configuration](https://junglewise.ai/threats/cve-2026-42924-f5-big-ip-privilege-escalation-in-icontrol-soap-via-snmp) (high, CVSS 8.7, published 13 May 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 2 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other F5 technologies

- [F5 BIG-IP Access Policy Manager](https://junglewise.ai/threats/technologies/big-ip-access-policy-manager): 30 vulnerabilities
- [F5 BIG-IP Advanced Firewall Manager](https://junglewise.ai/threats/technologies/big-ip-advanced-firewall-manager): 28 vulnerabilities
- [F5 BIG-IP Local Traffic Manager](https://junglewise.ai/threats/technologies/big-ip-local-traffic-manager): 27 vulnerabilities
- [F5 BIG-IP Advanced WAF](https://junglewise.ai/threats/technologies/big-ip-advanced-waf): 19 vulnerabilities
- [F5 NGINX Plus](https://junglewise.ai/threats/technologies/nginx-plus): 14 vulnerabilities
- [F5 Nginx-Gateway-Fabric](https://junglewise.ai/threats/technologies/nginx-gateway-fabric): 8 vulnerabilities
- [F5 NGINX Ingress Controller](https://junglewise.ai/threats/technologies/nginx-ingress-controller): 8 vulnerabilities
- [F5 BIG-IQ](https://junglewise.ai/threats/technologies/big-iq): 7 vulnerabilities
- [F5 BIG-IP DNS](https://junglewise.ai/threats/technologies/big-ip-dns): 6 vulnerabilities
- [F5 BIG-IQ Centralized Management](https://junglewise.ai/threats/technologies/big-iq-centralized-management): 4 vulnerabilities
- [F5 BIG-IP APM](https://junglewise.ai/threats/technologies/big-ip-apm): 3 vulnerabilities
- [F5 iControl REST](https://junglewise.ai/threats/technologies/icontrol-rest): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "F5 BIG-IP vulnerabilities", https://junglewise.ai/threats/technologies/big-ip, 9 November 2026.