TI-2023-20559 Aliases CVE-2023-39420 GHSA-pw6p-wr56-q7jh

Use of Hard-coded Credentials in RDPCore.dll

MEDIUM 44CWE-798Published 2023-09-07 · Updated 2024-09-26

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-798.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00734 54th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Resort Data Processing, Inc.	IRM Next Generation	5.3.2.15	—	No fix listed	CNA

IRM Next Generation VendorResort Data Processing, Inc. Affected 5.3.2.15 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:resortdata:internet_reservation_module_next_generation:5.3.2.15:::::::*	5.3.2.15	Vulnerable	Resort Data Processing, Inc.

cpe:2.3:a:resortdata:internet_reservation_module_next_generation:5.3.2.15:*:*:*:*:*:*:* Versions 5.3.2.15 Vulnerable ·Resort Data Processing, Inc.

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-39420
2026-10-03 Alias added: GHSA-pw6p-wr56-q7jh

References

Advisory 1

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

TI-2023-20561 Use of Hard-coded Credentials in multiple /irmdata/api/ endpoints CVSS 3.1CRITICAL 9.8
TI-2023-20562 Improper Neutralization of Special Elements used in an SQL Command in RDPData.dll CVSS 3.1CRITICAL 9.1
TI-2023-20563 Injection in Resort Data Processing, Inc. IRM Next Generation CVSS 3.1CRITICAL 9.9
TI-2023-20560 Use of Hard-coded Credentials in RDPWin.dll CVSS 3.1HIGH 7.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences