What is CVE-2025-12486?

CVE-2025-12486 is a high-severity vulnerability in Heimdall Data Database Proxy, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2025-11-06.

How severe is CVE-2025-12486?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Heimdall Data Database Proxy

CVE-2025-12486

Heimdall Data Database Proxy Cross-Site Scripting Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Minimal user interaction is required to exploit this vulnerability. The specific flaw exists within the handling of the database event logs. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of arbitrary script. An attacker can leverage this vulnerability to interact with the application in the context of the target user. Was ZDI-CAN-24755.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (37.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Heimdall Data Database Proxy — versions 23.11.06.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

zdi-disclosures@trendmicro.com (x_research-advisory)

Frequently asked questions

What is CVE-2025-12486?: CVE-2025-12486 is a high-severity vulnerability in Heimdall Data Database Proxy, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2025-11-06.
How severe is CVE-2025-12486?: High severity. CVSS v3 base score is 8.8 out of 10.