How severe is CVE-2023-45894?

CVE-2023-45894 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-45894 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45894?

CVE-2023-45894 affects Parallels Remote Application Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-45894?

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-2023-45894 published?

CVE-2023-45894 was published on 2023-12-14 and last updated on 2026-06-17.

CVE-2023-45894

CVE-2023-45894 is a critical-severity vulnerability in Parallels Remote Application Server with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Parallels Remote Application Server
Published: 2023-12-14
Last modified: 2026-06-17

Description

The Remote Application Server in Parallels RAS before 19.2.23975 does not segment virtualized applications from the server, which allows a remote attacker to achieve remote code execution via standard kiosk breakout techniques.

Frequently asked questions

What is CVE-2023-45894?: The Remote Application Server in Parallels RAS before 19.2.23975 does not segment virtualized applications from the server, which allows a remote attacker to achieve remote code execution via standard kiosk breakout techniques.
How severe is CVE-2023-45894?: CVE-2023-45894 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-45894 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45894?: CVE-2023-45894 affects Parallels Remote Application Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-45894?: 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-2023-45894 published?: CVE-2023-45894 was published on 2023-12-14 and last updated on 2026-06-17.

References

https://github.com/Oracle-Security/CVEs/blob/main/Parallels%20Remote%20Server/readme.md

Affected products (1)

cpe:2.3:a:parallels:remote_application_server:*:*:*:*:*:*:*:*

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