What is CVE-2025-1861?

CVE-2025-1861 is a critical-severity vulnerability in Netapp Ontap, classified under Incorrect Calculation of Buffer Size. CVSS score: 9.8/10. Published 2025-03-30.

How severe is CVE-2025-1861?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-1861 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Netapp Ontap

CVE-2025-1861

In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when parsing HTTP redirect in the response to an HTTP request, there is currently limit on the location value size caused by limi…

EPSS: 0.008 (51.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Netapp Ontap — versions 9
Php
Php Group — versions 8.1.*, 8.2.*, 8.3.*

Weakness classification (CWE)

CWE-131 — Incorrect Calculation of Buffer Size

Public proof-of-concept exploits

References

security@php.net (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)

Frequently asked questions

What is CVE-2025-1861?: CVE-2025-1861 is a critical-severity vulnerability in Netapp Ontap, classified under Incorrect Calculation of Buffer Size. CVSS score: 9.8/10. Published 2025-03-30.
How severe is CVE-2025-1861?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-1861 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.