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CVE-2026-22548— BIG-IP Advanced WAF and ASM vulnerability

Quick assessment

Affected
F5 BIG-IP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

F5 BIG-IP是美国F5公司的一款集成了网络流量管理、应用程序安全管理、负载均衡等功能的应用交付平台。 F5 BIG-IP存在竞争条件问题漏洞，该漏洞源于配置安全策略后，特定请求可能导致bd进程终止。

CVSS 5.9 · Medium EPSS 0.20% · P8

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2026-22548

Vulnerability Information
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Vulnerability Title
BIG-IP Advanced WAF and ASM vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
When a BIG-IP Advanced WAF or ASM security policy is configured on a virtual server, undisclosed requests along with conditions beyond the attacker's control can cause the bd process to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
F5 BIG-IP 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F5 BIG-IP是美国F5公司的一款集成了网络流量管理、应用程序安全管理、负载均衡等功能的应用交付平台。 F5 BIG-IP存在竞争条件问题漏洞，该漏洞源于配置安全策略后，特定请求可能导致bd进程终止。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
F5 BIG-IP 21.0.0 ~ * -

II. Public POCs for CVE-2026-22548

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III. Intelligence Information for CVE-2026-22548

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Vendor Advisories for CVE-2026-22548 (1)

Same Patch Batch · F5 · 2026-02-04 · 5 CVEs total

CVE-2026-1642 5.9 MEDIUM NGINX vulnerability
CVE-2026-22549 4.9 MEDIUM BIG-IP Container Ingress Services vulnerability
CVE-2026-20730 3.3 LOW BIG-IP Edge Client for Windows vulnerability
CVE-2026-20732 3.1 LOW BIG-IP Configuration utility vulnerability

IV. Related Vulnerabilities

Same product: BIG-IP
Same vendor: F5
Same weakness: CWE-362

V. Comments for CVE-2026-22548

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