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01 Record

CVE-2026-20156

Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities

HighPUBLISHEDCNA: cisco
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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02 Description

Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.45% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 39.5% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Undergoing Analysis. NVD last modified this record on 2026-10-24.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-07-15 16:17Z3 MO AGO
Last updated
2026-08-14 21:00Z2 MO AGO
Reserved
2025-10-08
Assigning CNA
cisco
Record state
PUBLISHED
Severity
High (CVSS 8.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
Data version
5.2
Document digest
a327e5b990924ce43bce572791a3cf91c7d0da32767c5f96119690b1a9b559b1

05 Affected products

VendorProductVersionsPlatforms
CiscoCisco RoomOS SoftwareRoomOS 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, RoomOS 10.11.3.0, RoomOS 10.15.5.3, RoomOS 10.19.2.2, RoomOS 11.1.3.1, RoomOS 10.11.6.0, RoomOS 10.19.3.0, RoomOS 10.19.4.2, RoomOS 10.3.2.4, RoomOS 10.3.4.0, RoomOS 10.15.3.0, RoomOS 11.1.4.1, RoomOS 11.14.2.3, RoomOS 11.1.2.4, RoomOS 10.8.3.1, RoomOS 11.14.2.1, RoomOS 10.3.3.0, RoomOS 10.8.4.0, RoomOS 10.15.4.1, RoomOS 10.19.5.6, RoomOS 10.11.4.1, RoomOS 11.9.3.1, RoomOS 11.5.3.3, RoomOS 10.3.2.0, RoomOS 11.9.2.4, RoomOS 11.14.3.0, RoomOS 11.17.2.2, RoomOS 11.14.4.0, RoomOS 10.19 StepUpg, RoomOS 11.17.3.0, RoomOS 11.20.2.3, RoomOS 11.14.5.0, RoomOS 11.17.4.0, RoomOS 11.20.3.0, RoomOS 11.23.1.6, RoomOS 11.23.1.8, RoomOS 11.24.1.5, RoomOS 11.24.2.4, RoomOS 11.24.3.0, RoomOS 11.24.4.1, RoomOS 11.27.2.0, RoomOS 11.28.1.3, RoomOS 11.27.3.0, RoomOS 11.31.1.5, RoomOS 11.27.4.0, RoomOS 11.32.2.1, RoomOS 11.33.1.7, RoomOS 26.0.1.2, RoomOS 11.34.1.2, RoomOS 11.32.3.0, RoomOS 11.27.5.0, RoomOS 11.32.4.0, RoomOS 26.1.1.5, RoomOS 11.35.1.2, RoomOS 26.2.2.2, RoomOS 11.32.5.1, RoomOS 26.4.1.6, RoomOS 26.4.1.4, RoomOS 26.3.1.3, RoomOS 11.36.1.1, RoomOS 11.37.1.0, RoomOS 26.5.2.0, RoomOS 11.38.1.1—

06 References