F5 BIG-IP Next SPK Client SSL Profile denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in F5 BIG-IP Next SPK, BIG-IP Next CNF, BIG-IP Next for Kubernetes and BIG-IP. It has been rated as problematic. This affects an unknown part of the component Client SSL Profile Handler. Performing a manipulation results in denial of service. This vulnerability is identified as CVE-2025-61974. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in F5 BIG-IP Next SPK, BIG-IP Next CNF, BIG-IP Next for Kubernetes and BIG-IP (version unknown). This affects an unknown function of the component Client SSL Profile Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

It is possible to read the advisory at my.f5.com. This vulnerability is uniquely identified as CVE-2025-61974. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 270671 (F5 Networks BIG-IP : BIG-IP SSL/TLS vulnerability (K000156733)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (270671). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 270671
Nessus Name: F5 Networks BIG-IP : BIG-IP SSL/TLS vulnerability (K000156733)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/15/2025 Advisory disclosed
10/15/2025 +0 days VulDB entry created
10/17/2025 +2 days VulDB entry last update

Sourcesinfo

Vendor: f5.com

Advisory: K000156733
Status: Confirmed

CVE: CVE-2025-61974 (🔒)
GCVE (CVE): GCVE-0-2025-61974
GCVE (VulDB): GCVE-100-328671

Entryinfo

Created: 10/15/2025 15:54
Updated: 10/17/2025 05:21
Changes: 10/15/2025 15:54 (52), 10/17/2025 03:03 (29), 10/17/2025 05:21 (2)
Complete: 🔍
Cache ID: 216:316:103

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