CVE-2025-20058Network attack vector

Service interruption via message-routing memory exhaustion

Published Feb 5, 2025 · Updated Feb 12, 2025

Resource exhaustion in F5 BIG-IP allows remote attackers to interrupt service via traffic to a message-routing virtual server. With a message routing profile configured, undisclosed traffic causes increased memory resource utilization; F5 has not disclosed the specific parser or allocation error. No authentication or user interaction is required, but the non-default message-routing configuration must be present, and the bounded impact is availability loss rather than data exposure or modification.

CVSS severity8.9
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in F5 BIG-IP allows remote attackers to interrupt service via traffic to a message-routing virtual server. With a message routing profile configured, undisclosed traffic causes increased memory resource utilization; F5 has not disclosed the specific parser or allocation error. No authentication or user interaction is required, but the non-default message-routing configuration must be present, and the bounded impact is availability loss rather than data exposure or modification.

The record

CVE
CVE-2025-20058
Published
Feb 5, 2025
Updated
Feb 12, 2025
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 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=15.1.0 <* changes=[{"at":"Hotfix-BIGIP-15.1.10.6.0.11.6-ENG.iso","status":"unaffected"}]
  2. Affected versionversion=16.1.0 <* changes=[{"at":"Hotfix-BIGIP-16.1.5.2.0.7.5-ENG.iso","status":"unaffected"}]
  3. Affected versionversion=17.1.0 <17.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

F5 Networks · BIG-IPversion=15.1.0 <* changes=[{"at":"Hotfix-BIGIP-15.1.10.6.0.11.6-ENG.iso","status":"unaffected"}]; version=16.1.0 <* changes=[{"at":"Hotfix-BIGIP-16.1.5.2.0.7.5-ENG.iso","status":"unaffected"}]; version=17.1.0 <17.1.2

Published CVSS scores

8.9F5 NetworksCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
7.5F5 NetworksCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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