Cisco Unified Communications Manager Security Bypass Vulnerability

published 2019-10-02 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-6280

cvss: 6.5; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits: 0; none known

A vulnerability in the web-based interface of Cisco Unified Communications Manager and Cisco Unified Communications Manager Session Management Edition (SME) could allow an unauthenticated, remote attacker to bypass security restrictions. The vulnerability is due to improper handling of malformed HTTP methods. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected system. A successful exploit could allow the attacker to gain unauthorized access to the system.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 23 mo ago (2024-11-19)

Exploit prediction

1.32% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD	2.0	6.4	AV:N/AC:L/Au:N/C:P/I:P/A:N

Affected products

Cisco Cisco Unified Communications Manager

Classification

Weakness

CWE-264 Permissions, Privileges, and Access Controls
CWE-444 Inconsistent Interpretation of HTTP Requests

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-ucm-secbypass
vendor-advisory

Sources

CVE List CVE-2019-15272
NVD CVE-2019-15272

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Summary