Is CVE-2017-3623 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2017-3623, but active exploitation has not been confirmed.

Can CVE-2017-3623 be exploited remotely?

Yes. CVE-2017-3623 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-3623?

CVE-2017-3623 has a CVSS score of 10.0 (CRITICAL).

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CVE-2017-3623

NVD-CWE-noinfoPublished: April 24, 2017· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

Vulnerability in the Solaris component of Oracle Sun Systems Products Suite (subcomponent: Kernel RPC). For supported versions that are affected see note. Easily "exploitable" vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Solaris. While the vulnerability is in Solaris, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Solaris. Note: CVE-2017-3623 is assigned for "Ebbisland". Solaris 10 systems which have had any Kernel patch installed after, or updated via patching tools since 2012-01-26 are not impacted. Also, any Solaris 10 system installed with Solaris 10 1/13 (Solaris 10 Update 11) are not vulnerable. Solaris 11 is not impacted by this issue. CVSS 3.0 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

NVD Source

Technical Analysis

CVE-2017-3623 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 10.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

A proof-of-concept (PoC) exploit exists for CVE-2017-3623. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.