What is CVE-2026-12357?

CVE-2026-12357 is a high-severity vulnerability in Heimdall Data Database Proxy, classified under CRLF Injection. CVSS score: 7.2/10. Published 2026-07-29.

How severe is CVE-2026-12357?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Heimdall Data Database Proxy

CVE-2026-12357

Heimdall Data Database Proxy generateFileContent CRLF Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Heimdall Data Database Proxy. Authentication is required to exploit this vulnerability. The specific flaw exists within the generateFileContent function. The issue results from the lack of proper neutralization of CRLF sequences. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-29251.

Vulnerability class: CRLF Injection

EPSS: 0.007 (52.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Heimdall Data Database Proxy — versions 25.03.01.21

Weakness classification (CWE)

CWE-93 — CRLF Injection

References

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

Frequently asked questions

What is CVE-2026-12357?: CVE-2026-12357 is a high-severity vulnerability in Heimdall Data Database Proxy, classified under CRLF Injection. CVSS score: 7.2/10. Published 2026-07-29.
How severe is CVE-2026-12357?: High severity. CVSS v3 base score is 7.2 out of 10.