How severe is CVE-2023-39424?

CVE-2023-39424 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-39424 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39424?

CVE-2023-39424 affects Resortdata Internet Reservation Module Next Generation. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39424?

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

When was CVE-2023-39424 published?

CVE-2023-39424 was published on 2023-09-07 and last updated on 2026-06-17.

CVE-2023-39424

CVE-2023-39424 is a critical-severity vulnerability in Resortdata Internet Reservation Module Next Generation with a CVSS 3.x base score of 9.9. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Resortdata Internet Reservation Module Next Generation
Published: 2023-09-07
Last modified: 2026-06-17

Description

A vulnerability in RDPngFileUpload.dll, as used in the IRM Next Generation booking system, allows a remote attacker to upload arbitrary content (such as a web shell component) to the SQL database and execute it with SYSTEM privileges. This vulnerability requires authentication to be exploited but can be paired with another vulnerability in the platform (CVE-2023-39420, which grants access to hardcoded credentials) to carry the attack without having assigned credentials.

Frequently asked questions

What is CVE-2023-39424?: A vulnerability in RDPngFileUpload.dll, as used in the IRM Next Generation booking system, allows a remote attacker to upload arbitrary content (such as a web shell component) to the SQL database and execute it with SYSTEM privileges. This vulnerability requires authentication to be exploited but can be paired with another vulnerability in the platform (CVE-2023-39420, which grants access to hardcoded credentials) to carry the attack without having assigned credentials.
How severe is CVE-2023-39424?: CVE-2023-39424 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-39424 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39424?: CVE-2023-39424 affects Resortdata Internet Reservation Module Next Generation. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39424?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-39424 published?: CVE-2023-39424 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:5.3.2.15:*:*:*:*:*:*:*

More vulnerabilities in Resortdata Internet Reservation Module Next Generation

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-2023-39421 — High (CVSS 7.7): The RDPWin.dll component as used in the IRM Next Generation booking engine includes a set of hardcoded API keys for…
CVE-2023-39422 — Medium (CVSS 6.5): The /irmdata/api/ endpoints exposed by the IRM Next Generation booking engine authenticates requests using HMAC…

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