HIGH🚩 CISA KEV⚡ EXPLOIT✓ PATCH🇬🇧 English

CVE-2026-20045

CVSS 8.2v3.1pub. 2026-01-21upd. 2026-02-13

A vulnerability in Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device.  This vulnerability is due to improper validation of user-supplied input in HTTP requests. An attacker could exploit this vulnerability by sending a sequence of crafted HTTP requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges 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.

oryginał EN

CVSS Vector

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

Cisco Unified Communications Manager
APP
Cisco
12.5 – 14su5 (bez)15.0 – 15su3a
Cisco Unified Communications Manager Im And Presence Service
APP
Cisco
12.5 – 14su5 (bez)15.0 – 15su3a
Cisco Unity Connection
APP
Cisco
12.5 – 14su5 (bez)15.0 – 15su3

CISA KEV — szczegółyi

Dostawcai: Cisco ↗
Produkti: Unified Communications Manager
Data dodania do KEVi: 21 stycznia 2026
Termin remediation (USA)i: 11 lutego 2026(po terminie)

🔧Advisory Cisco↗🇺🇸CISA KEV (oryginał)↗

Wymagana akcja (CISA)i

Zastosuj mitygacje zgodnie z instrukcjami producenta, postępuj zgodnie z wytycznymi BOD 22-01 dla usług chmurowych lub zaprzestań używania produktu, jeśli mitygacje są niedostępne.

tłumaczenie AI

▸ Pokaż oryginał (EN)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Opis CISAi

Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection i Cisco Webex Calling Dedicated Instance zawierają lukę code injection, która może umożliwić atakującemu uzyskanie dostępu na poziomie użytkownika do bazowego systemu operacyjnego, a następnie eskalację uprawnień do roota.

tłumaczenie AI

▸ Pokaż oryginał (EN)

Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance contain a code injection vulnerability that could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root.

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