CVE-2026-2891 Poly Voice Devices (CCX, Trio, Edge E) – Potential Denial of Service
Attackers can cause denial of service on Poly Voice IP devices by sending malformed data via a malicious SIP server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2891?
CVE-2026-2891 is a high-severity denial of service vulnerability in HP Inc CCX, published on 1 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The following Poly Voice IP devices, CCX, Trio, and Edge E, might be inoperable if they connect to a malicious SIP server and receive malformed data. HP is releasing updates to mitigate these potential vulnerabilities.
Weakness: CWE-400
Which versions are affected by CVE-2026-2891?
How do I fix CVE-2026-2891?
No fix has been published for CVE-2026-2891 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-2891 being exploited?
There is no known exploitation of CVE-2026-2891 in the wild and no public exploit code.
Sources
Also known as GHSA-gvgx-6fx4-x6g9.