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CVE-2025-59781— BIG-IP DNS cache 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和F5 BIG-IP Next CNF都是美国F5公司的产品。F5 BIG-IP是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 Next CNF是一个云原生网络功能解决方案。 F5 BIG-IP和F5 BIG-IP Next CNF存在安全漏洞，该漏洞源于DNS缓存配置不当，可能导致内存资源利用率增加。

CVSS 7.5 · High EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-59781

Vulnerability Information
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Vulnerability Title
BIG-IP DNS cache vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
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
清理环节不完整
Source: CVE Program / CVE List V5
Vulnerability Title
F5 BIG-IP和F5 BIG-IP Next CNF 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F5 BIG-IP和F5 BIG-IP Next CNF都是美国F5公司的产品。F5 BIG-IP是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 Next CNF是一个云原生网络功能解决方案。 F5 BIG-IP和F5 BIG-IP Next CNF存在安全漏洞，该漏洞源于DNS缓存配置不当，可能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 17.5.0 ~ * -
F5 BIG-IP Next CNF 2.0.0 ~ * -

II. Public POCs for CVE-2025-59781

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III. Intelligence Information for CVE-2025-59781

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Vendor Advisories for CVE-2025-59781 (1)

Same Patch Batch · F5 · 2025-10-15 · 44 CVEs total

CVE-2025-53521 9.8 CRITICAL BigIP APM Vulnerability
CVE-2025-53868 8.7 HIGH BIG-IP SCP and SFTP vulnerability
CVE-2025-57780 7.8 HIGH F5OS Vulnerability
CVE-2025-61955 7.8 HIGH F5OS vulnerability
CVE-2025-61974 7.5 HIGH BIG-IP SSL/TLS vulnerability
CVE-2025-53474 7.5 HIGH BIG-IP iRules vulnerability
CVE-2025-58120 7.5 HIGH BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability
CVE-2025-54479 7.5 HIGH BIG-IP PEM vulnerability
CVE-2025-53856 7.5 HIGH TMM vulnerability
CVE-2025-61951 7.5 HIGH BIG-IP DTLS 1.2 Vulnerability
CVE-2025-59778 7.5 HIGH VELOS partition container network vulnerability
CVE-2025-41430 7.5 HIGH BIG-IP SSL Orchestrator vulnerability
CVE-2025-61938 7.5 HIGH BIG-IP Advanced WAF and ASM bd process vulnerability
CVE-2025-55036 7.5 HIGH BIG-IP SSL Orchestrator vulnerability
CVE-2025-46706 7.5 HIGH BIG-IP iRules vulnerability
CVE-2025-48008 7.5 HIGH BIG-IP MPTCP vulnerability
CVE-2025-55669 7.5 HIGH BIG-IP HTTP/2 vulnerability
CVE-2025-60016 7.5 HIGH BIG-IP SSL/TLS vulnerability
CVE-2025-59478 7.5 HIGH BIG-IP AFM DoS protection profile vulnerability
CVE-2025-61990 7.5 HIGH TMM vulnerability

Showing top 20 of 44 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: BIG-IP
Same vendor: F5
Same weakness: CWE-459

V. Comments for CVE-2025-59781

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