How severe is CVE-2025-61974?

CVE-2025-61974 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-61974 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-61974?

CVE-2025-61974 primarily affects F5 Big-ip Next Cloud-native Network Functions. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-61974?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-61974 have an EU (EUVD) identifier?

Yes. CVE-2025-61974 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34624.

When was CVE-2025-61974 published?

CVE-2025-61974 was published on 2025-10-15 and last updated on 2026-06-17.

CVE-2025-61974

CVE-2025-61974 is a high-severity vulnerability in F5 Big-ip Next Cloud-native Network Functions with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-34624
Weakness: CWE-401
Affected product: F5 Big-ip Next Cloud-native Network Functions
Published: 2025-10-15
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-61974?: 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.
How severe is CVE-2025-61974?: CVE-2025-61974 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-61974 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-61974?: CVE-2025-61974 primarily affects F5 Big-ip Next Cloud-native Network Functions. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-61974?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-61974 have an EU (EUVD) identifier?: Yes. CVE-2025-61974 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34624.
When was CVE-2025-61974 published?: CVE-2025-61974 was published on 2025-10-15 and last updated on 2026-06-17.

References

https://my.f5.com/manage/s/article/K000156733

Affected products (4)

cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_next_service_proxy_for_kubernetes:*:*:*:*:*:*:*:*

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