CVE-2026-20156
Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities
Published Jul 15, 2026
CVSS 3.1 · 8.1 High
EPSS < 1%
KEV · Not listed
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-2026-20156 are related to improper restriction of operations within the bounds of a memory buffer that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-119.
The vulnerabilities tracked by CVE-2026-20156 are related to improper restriction of operations within the bounds of a memory buffer that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-119.
Affected Products
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CVE record
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NVD configurations
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Red Hat packages
No data
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OpenCVE enrichment
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Cisco | Cisco RoomOS Software | unknown |
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Configuration 1 [-]
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No data.
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| Cisco | Cisco Roomos Software |
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Remediation
Tracking
Advisories
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity High
Privileges Required None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
User Interaction None
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.459% probability within 30 days)
Exploitation none
Automatable no
Technical Impact total
References
History
Aug 14, 2026 9:30 PM
Added references
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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Aug 11, 2026 4:00 PM
First appearance in the feed. Affected versions updated. Affected vendors updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cisco roomos
Cisco roomos Cloud |
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| CPEs | cpe:2.3:o:cisco:roomos:*:*:*:*:*:*:*:* cpe:2.3:o:cisco:roomos_cloud:*:*:*:*:*:*:*:* |
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| Vendors & Products |
Cisco roomos
Cisco roomos Cloud |
Jul 23, 2026 10:45 PM
First appearance in the feed. Affected vendors updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cisco
Cisco cisco Roomos Software |
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| Vendors & Products |
Cisco
Cisco cisco Roomos Software |
Jul 15, 2026 6:30 PM
Scoring metrics updated
View changes
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Jul 15, 2026 4:30 PM
Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| 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-2026-20156 are related to improper restriction of operations within the bounds of a memory buffer that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-119. | |
| Title | Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities | |
| Weaknesses | CWE-119 | |
| References |
| |
| Metrics |
cvssV3_1
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Subscriptions
Weaknesses
