# CVE-2026-20187 — Cisco RoomOS Software

> As of 2026-08-14, CVE-2026-20187 is a HIGH-severity vulnerability in Cisco RoomOS Software, CVSS v3.1 7.5, EPSS 0.4% (38.5th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-20187, most recently “Multiple Vulnerabilities in Cisco Identity Services Engine, ISE Passive Identity Connector, and RoomOS (GovCERT.HK A26-07-32)”.

**Last updated:** 2026-08-14

## What is CVE-2026-20187?

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-2026-20187 are related to improper handling of exceptional conditions that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-703.

The record classifies CVE-2026-20187 under weakness class [CWE-703](https://cwe.mitre.org/data/definitions/703.html). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 104 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.5 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **EPSS (FIRST):** 0.4% probability of exploitation in the next 30 days, higher than 38.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-15, last modified 2026-08-14

## Is CVE-2026-20187 being exploited?

It currently carries a trending score of 23 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Cisco](https://intel.threadlinqs.com/vendors/cisco): RoomOS Software

## How to fix CVE-2026-20187

No vendor patch reference has been recorded for CVE-2026-20187 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-20187

1 tracked threat in the Threadlinqs corpus references CVE-2026-20187, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Multiple Vulnerabilities in Cisco Identity Services Engine, ISE Passive Identity Connector, and RoomOS (GovCERT.HK A26-07-32)](https://intel.threadlinqs.com/threat/TL-2026-1500) — MEDIUM · 2026-07-18

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10.

**Other references**

- [sec.cloudapps.cisco.com](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-roomos-AqNMbEq)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-20187
Full detection coverage and IOCs for threats exploiting CVE-2026-20187 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp