peter bassill · operator
$ cve CVE-2026-20045 JSON

CVE-2026-20045 KEV

8.2
HIGH · CVSS 3.1 · EPSS 4.5% (pctl 91)

Patch first

On CISA KEV — known exploited in the wild, due 2026-02-11.

Description

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.

Scoring

CVSS8.2 (HIGH, v3.1)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
EPSS4.54% — more likely to be exploited than 91% of all CVEs
WeaknessCWE-94
On CISA KEVyes — remediate by 2026-02-11
Public exploitnone known
Published2026-01-21
Last modified2026-06-17

CISA KEV

NameCisco Unified Communications Products Code Injection Vulnerability
Added2026-01-21
Due2026-02-11
Vendor / productCisco / Unified Communications Manager
Ransomware usenone reported

Affected (3)

VendorProduct
ciscounified communications manager
ciscounified communications manager im and presence service
ciscounity connection

References

→ the Explorer  ·  watch your stack  ·  NVD