CVE-2026-20302

mediumpriority · track · 0EPSS 0.002 · 14 %ileUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.23% (14th) EPSS
CVSS 6.1 · medium
Is it mine?
68 products
Check your exposure
Who says so?
1 sources
cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in the USB driver of Cisco RoomOS could allow an unauthenticated, local attacker with physical access to the USB port on an affected device to execute arbitrary code with root privileges. This vulnerability is due to insufficient boundary checks for specific data that is provided through the USB driver. An attacker could exploit this vulnerability by connecting a malicious USB device to an affected device. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system and execute arbitrary code with root privileges.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

6.1
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.1mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · psirt@cisco.com USexploitability 0.9 · impact 5.2
v3.15.6mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.16.1mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · Cisco PSIRT US
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120US
05

affected products (68)

Products and version ranges known to be affected.

showing 20 of 68
06

advisories (1)

Vendor and ecosystem advisories describing this.

  • cisco-sa-roomos-bof-vTMANZguCisco RoomOS Stack Overflow Vulnerability2026-08-19csaf · cisco_csafUS

    A vulnerability in the USB driver of Cisco RoomOS could allow an unauthenticated, local attacker with physical access to the USB port on an affected device to execute arbitrary code with root privileges. This vulnerability is due to insufficient boundary checks for specific data that is provided through the USB driver. An attacker could exploit this vulnerability by connecting a malicious USB device to an affected device. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system and execute arbitrary code with root privileges. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

07

sources

Which sources assert this record, and when.

cisco_csafNVDCVE.orgMITRE
published 2026-08-19modified 2026-08-20
08

references (1) nvd

External citations — patches, advisories, analysis.

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