How severe is CVE-2023-39421?

CVE-2023-39421 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-39421 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39421?

CVE-2023-39421 affects Resortdata Internet Reservation Module Next Generation. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39421?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-39421 published?

CVE-2023-39421 was published on 2023-09-07 and last updated on 2026-06-17.

CVE-2023-39421

CVE-2023-39421 is a high-severity vulnerability in Resortdata Internet Reservation Module Next Generation with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Resortdata Internet Reservation Module Next Generation
Published: 2023-09-07
Last modified: 2026-06-17

Description

The RDPWin.dll component as used in the IRM Next Generation booking engine includes a set of hardcoded API keys for third-party services such as Twilio and Vonage. These keys allow unrestricted interaction with these services.

Frequently asked questions

What is CVE-2023-39421?: The RDPWin.dll component as used in the IRM Next Generation booking engine includes a set of hardcoded API keys for third-party services such as Twilio and Vonage. These keys allow unrestricted interaction with these services.
How severe is CVE-2023-39421?: CVE-2023-39421 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-39421 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39421?: CVE-2023-39421 affects Resortdata Internet Reservation Module Next Generation. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-39421 published?: CVE-2023-39421 was published on 2023-09-07 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:resortdata:internet_reservation_module_next_generation:5.4.1.23:*:*:*:*:*:*:*

More vulnerabilities in Resortdata Internet Reservation Module Next Generation

CVE-2023-39424 — Critical (CVSS 9.9): A vulnerability in RDPngFileUpload.dll, as used in the IRM Next Generation booking system, allows a remote attacker…
CVE-2023-39420 — Critical (CVSS 9.9): The RDPCore.dll component as used in the IRM Next Generation booking engine, allows a remote user to connect to…
CVE-2023-39423 — High (CVSS 8.6): The RDPData.dll file exposes the /irmdata/api/common endpoint that handles session IDs, among other features. By…
CVE-2023-39422 — Medium (CVSS 6.5): The /irmdata/api/ endpoints exposed by the IRM Next Generation booking engine authenticates requests using HMAC…

All CVEs affecting Resortdata Internet Reservation Module Next Generation →

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