Is CVE-2023-51638 actively exploited?

No active exploitation of CVE-2023-51638 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-51638 be exploited remotely?

Yes. CVE-2023-51638 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-51638?

CVE-2023-51638 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-51638

CWE-798Published: November 22, 2024· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Allegra Hard-coded Credentials Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Allegra. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the configuration of a database. The issue results from the use of a hardcoded password. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-22360.

NVD Source

Technical Analysis

CVE-2023-51638 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 9.8.