CVE-2017-12337

A vulnerability in the upgrade mechanism of Cisco collaboration products based on the Cisco Voice Operating System software platform could allow an unauthenticated, remote attacker to gain unauthorized, elevated access to an affected device. The vulnerability occurs when a refresh upgrade (RU) or Prime Collaboration Deployment (PCD) migration is performed on an affected device. When a refresh upgrade or PCD migration is completed successfully, an engineering flag remains enabled and could allow root access to the device with a known password. If the vulnerable device is subsequently upgraded using the standard upgrade method to an Engineering Special Release, service update, or a new major release of the affected product, this vulnerability is remediated by that action. Note: Engineering Special Releases that are installed as COP files, as opposed to the standard upgrade method, do not remediate this vulnerability. An attacker who can access an affected device over SFTP while it is in a vulnerable state could gain root access to the device. This access could allow the attacker to compromise the affected system completely. Cisco Bug IDs: CSCvg22923, CSCvg55112, CSCvg55128, CSCvg55145, CSCvg58619, CSCvg64453, CSCvg64456, CSCvg64464, CSCvg64475, CSCvg68797.

Published: 2017-11-16 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-12337 is rated High Risk (66.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.44%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-12337

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 13.19% 6.44% -6.76%
2 2025-10-28 12.27% 13.19% +0.92%
3 2025-06-02 — 12.27% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-12337

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2017-12337

Affected software / configurations for CVE-2017-12337

Vendor Product Version Raw CPE
cisco emergency_responder — cpe:2.3:a:cisco:emergency_responder:-:*:*:*:*:*:*:*
cisco finesse — cpe:2.3:a:cisco:finesse:-:*:*:*:*:*:*:*
cisco hosted_collaboration_solution — cpe:2.3:a:cisco:hosted_collaboration_solution:-:*:*:*:*:*:*:*
cisco mediasense — cpe:2.3:a:cisco:mediasense:-:*:*:*:*:*:*:*
cisco prime_license_manager — cpe:2.3:a:cisco:prime_license_manager:-:*:*:*:*:*:*:*
cisco socialminer — cpe:2.3:a:cisco:socialminer:-:*:*:*:*:*:*:*
cisco unified_communications_manager — cpe:2.3:a:cisco:unified_communications_manager:-:*:*:*:*:*:*:*
cisco unified_communications_manager — cpe:2.3:a:cisco:unified_communications_manager:-:*:*:*:session_management:*:*:*
cisco unified_communications_manager_im_and_presence_service — cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:-:*:*:*:*:*:*:*
cisco unified_contact_center_express — cpe:2.3:a:cisco:unified_contact_center_express:-:*:*:*:*:*:*:*
cisco unified_intelligence_center — cpe:2.3:a:cisco:unified_intelligence_center:-:*:*:*:*:*:*:*
cisco unity_connection — cpe:2.3:a:cisco:unity_connection:-:*:*:*:*:*:*:*

References for CVE-2017-12337

URL Tags
http://www.securityfocus.com/bid/101865 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039813 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039814 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039815 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039816 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039817 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039818 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039819 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039820 Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-vos Vendor Advisory
cvelogic Threat Intelligence