CVE-2020-3346
CVE-2020-3346 is a medium-severity vulnerability in Cisco Unified Communications Manager with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Cisco Unified Communications Manager
- Published:
- Last modified:
Description
A vulnerability in the web UI of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability exists because the web UI does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive browser-based information.
Frequently asked questions
- What is CVE-2020-3346?
- A vulnerability in the web UI of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability exists because the web UI does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive browser-based information.
- How severe is CVE-2020-3346?
- CVE-2020-3346 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2020-3346 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-3346?
- CVE-2020-3346 primarily affects Cisco Unified Communications Manager. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-3346?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-3346 published?
- CVE-2020-3346 was published on 2020-08-17 and last updated on 2026-06-17.
References
Affected products (6)
- cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*
- cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*
- cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\):*:*:*:-:*:*:*
- cpe:2.3:a:cisco:unified_communications_manager:12.0\(1\):*:*:*:session_management:*:*:*
- cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\):*:*:*:-:*:*:*
- cpe:2.3:a:cisco:unified_communications_manager:12.5\(1\):*:*:*:session_management:*:*:*
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