How severe is CVE-2025-14727?

CVE-2025-14727 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2025-14727 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-14727?

CVE-2025-14727 affects F5 Nginx Ingress Controller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-14727?

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-2025-14727 have an EU (EUVD) identifier?

Yes. CVE-2025-14727 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203903.

When was CVE-2025-14727 published?

CVE-2025-14727 was published on 2025-12-17 and last updated on 2026-06-17.

CVE-2025-14727

CVE-2025-14727 is a high-severity vulnerability in F5 Nginx Ingress Controller with a CVSS 3.x base score of 8.3. 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-22.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v4: 8.7
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-203903
Weakness: CWE-22
Affected product: F5 Nginx Ingress Controller
Published: 2025-12-17
Last modified: 2026-06-17

Description

A vulnerability exists in NGINX Ingress Controller's nginx.org/rewrite-target annotation validation. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Frequently asked questions

What is CVE-2025-14727?: A vulnerability exists in NGINX Ingress Controller's nginx.org/rewrite-target annotation validation. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
How severe is CVE-2025-14727?: CVE-2025-14727 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2025-14727 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-14727?: CVE-2025-14727 affects F5 Nginx Ingress Controller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-14727?: 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-2025-14727 have an EU (EUVD) identifier?: Yes. CVE-2025-14727 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203903.
When was CVE-2025-14727 published?: CVE-2025-14727 was published on 2025-12-17 and last updated on 2026-06-17.

References

https://my.f5.com/manage/s/article/K000158176

Affected products (1)

cpe:2.3:a:f5:nginx_ingress_controller:5.3.0:*:*:*:*:*:*:*

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