CVE-2023-39420

Name: CVE-2023-39420
Creator: NVD / NIST
Published: 2023-09-07T13:15:08.517+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2023-39420 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The RDPCore.dll component as used in the IRM Next Generation booking engine, allows a remote user to connect to customers with an "admin" account and a corresponding password computed daily by a routine inside the DLL file. Once reverse-engineered, this routine can help an attacker generate the daily password and connect to application customers. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

The RDPCore.dll component as used in the IRM Next Generation booking engine, allows a remote user to connect to customers with an "admin" account and a corresponding password computed daily by a routine inside the DLL file. Once reverse-engineered, this routine can help an attacker generate the daily password and connect to application customers. Given that this is an administrative account, anyone logging into a customer deployment has full, unrestricted access to the application.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.55%

41.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Resortdata	Internet Reservation Module Next Generation	5.3.2.15

References

https://bitdefender.com/blog/labs/check-out-with-extra-charges-vulnerabilities-in-hotel-booking-engine-explained/Third Party Advisory
https://bitdefender.com/blog/labs/check-out-with-extra-charges-vulnerabilities-in-hotel-booking-engine-explained/Third Party Advisory

Timeline

Published: Sep 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39420?

How severe is CVE-2023-39420?

CVE-2023-39420 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39420?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39420?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST