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Critical severity · published Jul 15, 2026
CVE-2026-20157
Cisco RoomOS Security Hardening Release - Missing Encryption Vulnerabilities
9.8
CVSS
0.2%
EPSS
No
On KEV
Description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco RoomOS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20157 are related to missing encryption that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-311.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CR
Cisco RoomOS Software · Cisco
RoomOS 10.11.2.2; RoomOS 10.15.2.2; RoomOS 11.5.4.6; RoomOS 11.5.2.4; RoomOS 10.8.2.5; RoomOS 10.11.5.2; +34 more · source: vendor
RO
Roomos · Cisco
before 11.32.6.0; 26.0.1.2 before 26.5.2.2 · source: NVD
RC
Roomos Cloud · Cisco
before 11.39.1.1; 26.0.1.2 before 26.7.1.7 · source: NVD
Affected product
CR
Cisco RoomOS Software
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20157
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20157
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-roomos-AqNMbEq
www.cve.org
https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification
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