How severe is CVE-2017-9447?

CVE-2017-9447 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-9447 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9447?

CVE-2017-9447 affects Parallels Remote Application Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9447?

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-2017-9447 published?

CVE-2017-9447 was published on 2018-02-28 and last updated on 2026-06-17.

CVE-2017-9447

CVE-2017-9447 is a high-severity vulnerability in Parallels Remote Application Server with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Parallels Remote Application Server
Published: 2018-02-28
Last modified: 2026-06-17

Description

In the web interface of Parallels Remote Application Server (RAS) 15.5 Build 16140, a vulnerability exists due to improper validation of the file path when requesting a resource under the "RASHTML5Gateway" directory. A remote, unauthenticated attacker could exploit this weakness to read arbitrary files from the vulnerable system using path traversal sequences.

Frequently asked questions

What is CVE-2017-9447?: In the web interface of Parallels Remote Application Server (RAS) 15.5 Build 16140, a vulnerability exists due to improper validation of the file path when requesting a resource under the "RASHTML5Gateway" directory. A remote, unauthenticated attacker could exploit this weakness to read arbitrary files from the vulnerable system using path traversal sequences.
How severe is CVE-2017-9447?: CVE-2017-9447 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-9447 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9447?: CVE-2017-9447 affects Parallels Remote Application Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9447?: 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-2017-9447 published?: CVE-2017-9447 was published on 2018-02-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:parallels:remote_application_server:15.5:*:*:*:*:*:*:*

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