Is CVE-2023-4612 actively exploited?

No active exploitation of CVE-2023-4612 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-4612 be exploited remotely?

Yes. CVE-2023-4612 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-4612?

CVE-2023-4612 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-4612

CWE-302Published: November 9, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Improper Authentication vulnerability in Apereo CAS in jakarta.servlet.http.HttpServletRequest.getRemoteAddr method allows Multi-Factor Authentication bypass.This issue affects CAS: through 7.0.0-RC7. It is unknown whether in new versions the issue will be fixed. For the date of publication there is no patch, and the vendor does not treat it as a vulnerability.

NVD Source

Technical Analysis

CVE-2023-4612 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.