CVE-2025-54805Network attack vector

TMM memory exhaustion via unreleased cleanup resources

Published Oct 15, 2025 · Updated Oct 15, 2025

Memory exhaustion in F5 BIG-IP Next products allows remote authenticated users to interrupt TMM traffic processing via the declarative API. The cleanup path used when re-instantiating a virtual server with an iRule fails to release memory after its effective lifetime, increasing TMM memory utilization. The attacker needs low-privilege API access and the affected iRule configuration; repeated re-instantiation can exhaust memory and disrupt dependent traffic services.

CVSS severity6.0
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory exhaustion in F5 BIG-IP Next products allows remote authenticated users to interrupt TMM traffic processing via the declarative API. The cleanup path used when re-instantiating a virtual server with an iRule fails to release memory after its effective lifetime, increasing TMM memory utilization. The attacker needs low-privilege API access and the affected iRule configuration; repeated re-instantiation can exhaust memory and disrupt dependent traffic services.

The record

CVE
CVE-2025-54805
Published
Oct 15, 2025
Updated
Oct 15, 2025
Vendor
F5 Networks
Product
BIG-IP Next for Kubernetes
Classifications
CWE-401, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0.0 <2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

F5 Networks · BIG-IP Next for Kubernetesversion=2.0.0 <2.1.0
F5 Networks · BIG-IP Next CNFversion=1.1.0 <*
F5 Networks · BIG-IP Next SPKversion=1.7.0 <*

Published CVSS scores

6.0F5 NetworksCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
6.5F5 NetworksCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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