CVE-2025-66516

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

88.97% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.7% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Critical. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-12-04 16:17Z10 MO AGO

Last updated

2026-02-26 16:57Z8 MO AGO

Reserved

2025-12-03

Assigning CNA

apache

Record state

PUBLISHED

Severity

High (CVSS 8.4)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-611Improper Restriction of XML External Entity ReferenceBase

Data version

5.2

Document digest

8f0484e0484e8ea87e49a4e6bf1648657f715e12533e0c3b50a26edd8f881374

• lists.apache.orghttps://lists.apache.org/thread/s5x3k93nhbkqzztp1olxotoyjpdlps9kvendor-advisory
• cve.orghttps://cve.org/CVERecord?id=CVE-2025-54988related