CVE-2023-24594Network attack vector

Service interruption via undisclosed SSL traffic

Published May 3, 2023 · Updated Jan 29, 2025

Resource consumption in F5 BIG-IP products allows remote attackers to interrupt service with traffic to an SSL-enabled virtual server. F5 identifies TMM SSL processing as the locus but has not disclosed how the traffic drives excessive CPU or SSL accelerator utilization. The target must expose a virtual server configured with an SSL profile; the documented consequence is reduced availability, not data access or modification.

CVSS severity5.3
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource consumption in F5 BIG-IP products allows remote attackers to interrupt service with traffic to an SSL-enabled virtual server. F5 identifies TMM SSL processing as the locus but has not disclosed how the traffic drives excessive CPU or SSL accelerator utilization. The target must expose a virtual server configured with an SSL profile; the documented consequence is reduced availability, not data access or modification.

The record

CVE
CVE-2023-24594
Published
May 3, 2023
Updated
Jan 29, 2025
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-400
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=14.1.5 <*
  2. Affected versionversion=15.1.4.1 <15.1.5
  3. Affected versionversion=16.1.2 <16.1.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

F5 Networks · BIG-IPversion=14.1.5 <*; version=15.1.4.1 <15.1.5; version=16.1.2 <16.1.2.1
F5 Networks · BIG-IP Next Service Proxy for Kubernetesversion=1.5.0 <1.6.0

Published CVSS scores

5.3F5 NetworksCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo