CVE-2021-1406: cisco cisco unified communications manager
Vulnerability summary
CVE-2021-1406 is a medium (CVSS 4.9) vulnerability in cisco cisco unified communications manager. EPSS estimates a 1.08% chance of exploitation in the next 30 days, higher than 64.5% of scored vulnerabilities.
Timeline
- 08-04-2021PublishedVulnerability first disclosed.
- 08-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to access sensitive information on an affected device. The vulnerability is due to improper inclusion of sensitive information in downloadable files. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a specific set of commands. A successful exploit could allow the attacker to obtain hashed credentials of system users. To exploit this vulnerability an attacker would need to have valid user credentials with elevated privileges.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST4.9MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
1.08%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
0.00 pp
From 1.08% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-538Insertion of Sensitive Information into Externally-Accessible File or DirectoryThe product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorThe product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Affected systems
Cisco2 products
- cisco unified communications managern/a
- unified_communications_manager10.5\(2\) | 10.5\(2\)su1 | 10.5\(2\)su2 | 10.5\(2\)su2a | 10.5\(2\)su3 | 10.5\(2\)su3a | 10.5\(2\)su4 | 10.5\(2\)su4a | 10.5\(2\)su5 | 10.5\(2\)su6 | 10.5\(2\)su6a | 10.5\(2\)su7 | 10.5\(2\)su8 | 10.5\(2\)su9 | 10.5\(2\)su10 | 11.5\(1\) | 11.5\(1\)su1 | 11.5\(1\)su2 | 11.5\(1\)su3 | 11.5\(1\)su4 | 11.5\(1\)su5 | 11.5\(1\)su7 | 11.5\(1\)su8 | 11.5\(1\)su9 | 12.0\(1\) | 12.5\(1\) | 12.5\(1\)su1 | 12.5\(1\)su2 | 12.5\(1\)su3 | 12.5\(1\)su4 | 12.5\(1\)su5
1 vendor · 2 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-inf-disc-wCxZNjL2Vendor AdvisoryX Refsource CISCO