CVE-2018-0203

5.3 mediumEPSS 1.6%

A vulnerability in the SMTP relay of Cisco Unity Connection could allow an unauthenticated, remote attacker to send unsolicited email messages, aka a Mail Relay Vulnerability. The vulnerability is due to improper handling of domain information in the affected software. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted requests to the targeted application. A successful exploit could allow the attacker to send email messages to arbitrary addresses. Cisco Bug IDs: CSCvg62215.

Severity

CVSS 3.0

5.3 medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
CWE: CWE-19
Published: 2018-02-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cisco:unity_connection

References

http://www.securityfocus.com/bid/103142
http://www.securitytracker.com/id/1040413
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180221-cuc
http://www.securityfocus.com/bid/103142
http://www.securitytracker.com/id/1040413

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