CVE-2018-0409

HIGH
7.5
CVSS Score
Published: August 15, 2018 at 08:00 PM UTC
Updated: June 17, 2026 at 01:30 AM UTC
3 products affected across 1 vendorTelepresence Video Communication ServerUnified Communications Manager Im and Presence ServiceExpressway

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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

A vulnerability in the XCP Router service of the Cisco Unified Communications Manager IM & Presence Service (CUCM IM&P) and the Cisco TelePresence Video Communication Server (VCS) and Expressway could allow an unauthenticated, remote attacker to cause a temporary service outage for all IM&P users, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a malicious IPv4 or IPv6 packet to an affected device on TCP port 7400. An exploit could allow the attacker to overread a buffer, resulting in a crash and restart of the XCP Router service. Cisco Bug IDs: CSCvg97663, CSCvi55947.

Affected

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/105102
VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/105104
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1041533
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1041534

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-125

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