CVE-2015-4328

Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.2 improperly checks for a user account's read-only attribute, which allows remote authenticated users to execute arbitrary OS commands via crafted HTTP requests, as demonstrated by read or write operations on the Unified Communications lookup page, aka Bug ID CSCuv12552.

Published: 2015-08-19 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]

NVD Status：Modified，CVE State: published

View at NVD, CVE.org, EUVD

Conclusion & alert: CVE-2015-4328 is rated Moderate Risk (45/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.98%). Core evidence: EPSS rose +1.74% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule 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-2015-4328

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	0.24%	1.98%	+1.74%
2	2025-06-13	0.26%	0.24%	-0.01%
3	2025-03-30	—	0.26%	—

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-4328

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
4.0	2.0	MEDIUM	`AV:N/AC:L/Au:S/C:N/I:P/A:N` 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:S) A single authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	8.0	2.9	[email protected]

Weakness enumeration for CVE-2015-4328

CWE-20 MITRE ↗

Affected software / configurations for CVE-2015-4328

Vendor	Product	Version	Raw CPE
cisco	telepresence_video_communication_server_software	x8.5.2	cpe:2.3:a:cisco:telepresence_video_communication_server_software:x8.5.2::::expressway:::

References for CVE-2015-4328

URL	Tags
http://tools.cisco.com/security/center/viewAlert.x?alertId=40522	Vendor Advisory
http://www.securityfocus.com/bid/76399	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1033329	Third Party Advisory VDB Entry

cvelogic Threat Intelligence