What’s Vulnerable › Vulnerabilities

CVE-2023-4463: Poly CCX 400/CCX 600/Trio 8800/Trio C60 HTTP Header denial of service

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-12-29 · updated 2026-06-17
• Weakness: CWE-404

Description

A vulnerability classified as problematic was found in Poly CCX 400, CCX 600, Trio 8800 and Trio C60. This vulnerability affects unknown code of the component HTTP Header Handler. The manipulation of the argument Cookie leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-249256.

Affected products

• Poly Ccx 400 Firmware: all versions
• Poly Ccx 600 Firmware: all versions
• Poly Trio 8800: all versions
• Poly Trio C60 Firmware: all versions

References

• https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11919.html
• https://github.com/modzero/MZ-23-01-Poly-VoIP-Devices
• https://modzero.com/en/advisories/mz-23-01-poly-voip/
• https://vuldb.com/?ctiid.249256
• https://vuldb.com/?id.249256
• https://modzero.com/en/blog/multiple-vulnerabilities-in-poly-products/
• https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11919.html
• https://github.com/modzero/MZ-23-01-Poly-VoIP-Devices
• https://modzero.com/en/advisories/mz-23-01-poly-voip/
• https://vuldb.com/?ctiid.249256
• https://vuldb.com/?id.249256

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