How severe is CVE-2017-9830?

CVE-2017-9830 has a CVSS 3.x base score of 9.8, 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-2017-9830 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9830?

CVE-2017-9830 affects Code42 Crashplan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9830?

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-2017-9830 published?

CVE-2017-9830 was published on 2017-06-27 and last updated on 2026-06-17.

CVE-2017-9830

CVE-2017-9830 is a critical-severity vulnerability in Code42 Crashplan with a CVSS 3.x base score of 9.8. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Code42 Crashplan
Published: 2017-06-27
Last modified: 2026-06-17

Description

Remote Code Execution is possible in Code42 CrashPlan 5.4.x via the org.apache.commons.ssl.rmi.DateRMI Java class, because (upon instantiation) it creates an RMI server that listens on a TCP port and deserializes objects sent by TCP clients.

Frequently asked questions

What is CVE-2017-9830?: Remote Code Execution is possible in Code42 CrashPlan 5.4.x via the org.apache.commons.ssl.rmi.DateRMI Java class, because (upon instantiation) it creates an RMI server that listens on a TCP port and deserializes objects sent by TCP clients.
How severe is CVE-2017-9830?: CVE-2017-9830 has a CVSS 3.x base score of 9.8, 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-2017-9830 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9830?: CVE-2017-9830 affects Code42 Crashplan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9830?: 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-2017-9830 published?: CVE-2017-9830 was published on 2017-06-27 and last updated on 2026-06-17.

References

https://blog.radicallyopensecurity.com/CVE-2017-9830.html

Affected products (1)

cpe:2.3:a:code42:crashplan:5.4:*:*:*:*:*:*:*

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