CVE-2023-20266
CVE-2023-20266 is a medium-severity vulnerability in Cisco Emergency Responder with a CVSS 3.x base score of 6.5. 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-269.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 0% (28th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-269
- Affected product: Cisco Emergency Responder
- Published:
- Last modified:
Description
A vulnerability in Cisco Emergency Responder, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection could allow an authenticated, remote attacker to elevate privileges to root on an affected device. This vulnerability exists because the application does not properly restrict the files that are being used for upgrades. An attacker could exploit this vulnerability by providing a crafted upgrade file. A successful exploit could allow the attacker to elevate privileges to root. To exploit this vulnerability, the attacker must have valid platform administrator credentials on an affected device.
Frequently asked questions
- What is CVE-2023-20266?
- A vulnerability in Cisco Emergency Responder, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection could allow an authenticated, remote attacker to elevate privileges to root on an affected device. This vulnerability exists because the application does not properly restrict the files that are being used for upgrades. An attacker could exploit this vulnerability by providing a crafted upgrade file. A successful exploit could allow the attacker to elevate privileges to root. To exploit this vulnerability, the attacker must have valid platform administrator credentials on an affected device.
- How severe is CVE-2023-20266?
- CVE-2023-20266 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2023-20266 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-20266?
- CVE-2023-20266 primarily affects Cisco Emergency Responder. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2023-20266?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-20266 published?
- CVE-2023-20266 was published on 2023-08-30 and last updated on 2026-06-17.
References
Affected products (10)
- cpe:2.3:a:cisco:emergency_responder:12.5.1su4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:emergency_responder:12.5.1su8a:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:emergency_responder:14su3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unified_communications_manager:12.5.1su8:*:*:*:-:*:*:*
- cpe:2.3:a:cisco:unified_communications_manager:12.5.1su8:*:*:*:session_management:*:*:*
- cpe:2.3:a:cisco:unity_connection:12.5\(1\)su6:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unity_connection:12.5\(1\)su7:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unity_connection:12.5\(1\)su8:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unity_connection:14su2:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unity_connection:14su3:*:*:*:*:*:*:*
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