CVE-2021-1362 | Cisco Unified Communications Products Remote Code Execution Vulnerability

A vulnerability in the SOAP API endpoint of Cisco Unified Communications Manager, Cisco Unified Communications Manager Session Management Edition, Cisco Unified Communications Manager IM & Presence Service, Cisco Unity Connection, and Cisco Prime License Manager could allow an authenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to improper sanitization of user-supplied input. An attacker could exploit this vulnerability by sending a SOAP API request with crafted parameters to an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the underlying Linux operating system of the affected device.

Published: 2021-04-08 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-1362 is rated Moderate Risk (64.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.02%). 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-2021-1362

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 2026-04-10 2.33% 2.02% -0.31%
2 2025-03-30 7.83% 2.33% -5.50%
3 2025-03-29 — 7.83% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-1362

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
9.0 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2021-1362

Affected software / configurations for CVE-2021-1362

Vendor Product Version Raw CPE
cisco prime_license_manager >= 10.5\(2\), < 11.5\(1\)su9 cpe:2.3:a:cisco:prime_license_manager:*:*:*:*:*:*:*:*
cisco unified_communications_manager >= 10.5\(2\), < 11.5\(1\)su9 cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*
cisco unified_communications_manager >= 10.5\(2\), < 11.5\(1\)su9 cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*
cisco unified_communications_manager >= 12.0\(1\), < 12.5\(1\)su4 cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*
cisco unified_communications_manager >= 12.0\(1\), < 12.5\(1\)su4 cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*
cisco unified_communications_manager_im_\&_presence_service >= 10.5\(2\), < 11.5\(1\)su9 cpe:2.3:a:cisco:unified_communications_manager_im_\&_presence_service:*:*:*:*:*:*:*:*
cisco unified_communications_manager_im_\&_presence_service >= 12.0\(1\), < 12.5\(1\)su4 cpe:2.3:a:cisco:unified_communications_manager_im_\&_presence_service:*:*:*:*:*:*:*:*
cisco unity_connection >= 10.5\(2\), < 11.5\(1\)su9 cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:*
cisco unity_connection >= 12.0\(1\), < 12.5\(1\)su4 cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:*

References for CVE-2021-1362

cvelogic Threat Intelligence