CVE-2026-20302Cisco RoomOS Stack Overflow Vulnerability
- 6.1MediumCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 86% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By cisco
- 11 months later
· 11 months later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Medium6.1 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Awaiting Analysis | 3.1 | Medium6.1 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Affected products
- affected RoomOS 10.11.2.2
- affected RoomOS 10.15.2.2
- affected RoomOS 11.5.4.6
- affected RoomOS 11.5.2.4
- affected RoomOS 10.8.2.5
- affected RoomOS 10.11.5.2
- affected RoomOS 10.11.3.0
- affected RoomOS 10.15.5.3
- affected RoomOS 10.19.2.2
- affected RoomOS 11.1.3.1
- affected RoomOS 10.11.6.0
- affected RoomOS 10.19.3.0
- affected RoomOS 10.19.4.2
- affected RoomOS 10.3.2.4
- affected RoomOS 10.3.4.0
- affected RoomOS 10.15.3.0
- affected RoomOS 11.1.4.1
- affected RoomOS 11.14.2.3
- affected RoomOS 11.1.2.4
- affected RoomOS 10.8.3.1
- affected RoomOS 11.14.2.1
- affected RoomOS 10.3.3.0
- affected RoomOS 10.8.4.0
- affected RoomOS 10.15.4.1
- affected RoomOS 10.19.5.6
- affected RoomOS 10.11.4.1
- affected RoomOS 11.9.3.1
- affected RoomOS 11.5.3.3
- affected RoomOS 10.3.2.0
- affected RoomOS 11.9.2.4
- affected RoomOS 11.14.3.0
- affected RoomOS 11.17.2.2
- affected RoomOS 11.14.4.0
- affected RoomOS 10.19 StepUpg
- affected RoomOS 11.17.3.0
- affected RoomOS 11.20.2.3
- affected RoomOS 11.14.5.0
- affected RoomOS 11.17.4.0
- affected RoomOS 11.20.3.0
- affected RoomOS 11.23.1.6
- and 32 more
What to do
Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-62563 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-20302)Record last updated .