Is CVE-2026-1203 actively exploited?

No active exploitation of CVE-2026-1203 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-1203 be exploited remotely?

Yes. CVE-2026-1203 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-1203?

CVE-2026-1203 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-1203

HIGH

CVE-2026-1203

CWE-287Published: January 20, 2026· Updated: Jun 17, 2026

8.1

CVSS v3.1

Official Description

A weakness has been identified in CRMEB up to 5.6.3. The impacted element is the function remoteRegister of the file crmeb/app/services/user/LoginServices.php of the component JSON Token Handler. Executing a manipulation of the argument uid can lead to improper authentication. The attack may be performed from remote. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

NVD Source

Technical Analysis

CVE-2026-1203 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.