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CVE-2025-21091— BIG-IP SNMP 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 SNMP存在安全漏洞，该漏洞源于当禁用了SNMP v1或v2c时，未公开的请求可导致内存资源利用率增加。

CVSS 7.5 · High EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-21091

Vulnerability Information
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Vulnerability Title
BIG-IP SNMP vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5
Vulnerability Title
F5 BIG-IP 安全漏洞
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 SNMP存在安全漏洞，该漏洞源于当禁用了SNMP v1或v2c时，未公开的请求可导致内存资源利用率增加。
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 17.1.0 ~ 17.1.2 -

II. Public POCs for CVE-2025-21091

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III. Intelligence Information for CVE-2025-21091

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Vendor Advisories for CVE-2025-21091 (1)

Same Patch Batch · F5 · 2025-02-05 · 17 CVEs total

CVE-2025-20029 8.8 HIGH BIG-IP iControl REST and tmsh vulnerability
CVE-2025-23239 8.7 HIGH BIG-IP iControl REST vulnerability
CVE-2025-24320 8.0 HIGH BIG-IP Configuration utility vulnerability
CVE-2025-24497 7.5 HIGH BIG-IP PEM vulnerability
CVE-2025-24312 7.5 HIGH BIG-IP AFM vulnerability
CVE-2025-22846 7.5 HIGH BIG-IP SIP Vulnerability
CVE-2025-23412 7.5 HIGH BIG-IP APM access profile vulnerability
CVE-2025-24326 7.5 HIGH BIG-IP Advanced WAF/ASM BADoS vulnerability
CVE-2025-22891 7.5 HIGH BIG-IP PEM Vulnerability
CVE-2025-20045 7.5 HIGH BIG-IP SIP MRF Vulnerability
CVE-2025-20058 7.5 HIGH BIG-IP message routing vulnerability
CVE-2025-21087 7.5 HIGH TMM Vulnerability
CVE-2025-24319 6.5 MEDIUM BIG-IP Next Central Manager vulnerability
CVE-2025-23413 4.4 MEDIUM BIG-IP Next Central Manager vulnerability
CVE-2025-23419 4.3 MEDIUM TLS Session Resumption Vulnerability
CVE-2025-23415 3.1 LOW BIG-IP APM Endpoint Inspection vulnerability

IV. Related Vulnerabilities

Same product: BIG-IP
Same vendor: F5
Same weakness: CWE-401

V. Comments for CVE-2025-21091

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