최우선 대응높음CISA KEV · 실제 악용 확인

CVE-2026-20230

Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability

대응 우선순위: 최우선
CVSS: 8.6
EPSS: 41.7%
CISA KEV: 등록
조치 기한: 2026.06.28
공개일: 2026.06.04

최우선 대응 판단

CISA KEV에 등록된 실제 악용 확인 취약점

실제 악용확인

EPSS41.7%

EPSS 백분위98.5%

설명

A vulnerability in 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 server-side request forgery (SSRF) attacks through an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to write files to the underlying operating system that could be used later to elev...

영향 제품·버전

공급사 Cisco

제품 Cisco Unified Communications Manager, unified communications manager

영향 버전 N/A, >= 14.0 < 14su6, >= 15.0 <= 15su4a

수정 버전 14su6

조치 방법

CISA 공식 요구조치

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

조치 기한: 2026.06.28

공급사가 제공한 최신 보안 업데이트 적용
자사 보유 제품과 영향 버전의 일치 여부 확인
외부 노출 서비스와 비정상 인증·접속 로그 점검
패치가 어려우면 공급사 완화조치와 접근통제 적용

기술 정보

CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

CWE CWE-918

KEV 등록일 2026.06.25

랜섬웨어 캠페인 사용 미확인

CISA 비고 https://www.cisco.com/c/en/us/support/docs/csa/cisco-sa-cucm-ssrf-cXPnHcW.html ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-20230

EPSS 데이터 기준일 2026.06.27

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