Vulnerability · Published Nov 6, 2025 · Assigned by zdi

CVE-2025-12486Heimdall Data Database Proxy Cross-Site Scripting Remote Code Execution Vulnerability

High 8.8

In plain English

A high-severity cross-site scripting in Database Proxy from Heimdall Data. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.0)8.8High

Exploit odds (30 days)0.5%top 57.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Heimdall Data	Database Proxy	23.11.06.1

Weakness: CWE-79 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

ZDI-25-980 x_research-advisory