CVE-2026-20230

Katalog CVE

CVSS 8.6 · High KEV · sudah dieksploitasi EPSS 88,2%

Kerentanan Server-Side Request Forgery (SSRF) pada cisco unified communications manager. Skor CVSS 3.1 8.6 (High) menurut cisco.com. Masuk katalog KEV CISA pada 25 Juni 2026, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

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 elevate to root. Note: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root. Note: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default.

Advisory KUTIM-CSIRT

• Peringatan Keamanan: Kerentanan CVE-2026-20230 pada Cisco Unified CM yang Dieksploitasi Secara Aktif 26 Jun 2026

Rincian

Terbit di NVD

3 Juni 2026

Terakhir diubah

7 Oktober 2026

Status NVD

Analyzed

CVSS 3.1

8.6 (High), sumber cisco.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-918: Server-Side Request Forgery (SSRF)

EPSS (30 hari)

88,2% peluang dieksploitasi; lebih tinggi dari 99,7% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

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

Masuk KEV

25 Juni 2026

Tenggat CISA

28 Juni 2026 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

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.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20230 pemerintah AS
• https://denizhalil.com/2026/06/12/cve-2026-20230-cisco-unified-cm-ssrf/ exploit · advisory pihak ketiga