Cybersecurity researchers have identified a critical vulnerability in the Grandstream GXP1600 series of VoIP phones, tracked as CVE-2026-2329. This flaw, rated with a CVSS score of 9.3 out of 10.0, is an unauthenticated stack-based buffer overflow that could enable attackers to execute remote code and take control of affected devices without requiring authentication.

The exposure of this vulnerability highlights significant risks for organizations relying on these VoIP phones, as it could lead to unauthorized access, data breaches, or disruption of communication services. Users are advised to monitor for patches or updates from Grandstream to mitigate this threat and ensure their systems are secured against potential exploits.

Key Takeaways

  • Critical vulnerability in Grandstream GXP1600 VoIP phones allows unauthenticated remote code execution
  • CVE-2026-2329 has a high CVSS score of 9.3, indicating severe risk
  • Attackers can seize control of devices without authentication, posing threats to communication security
  • Organizations should apply patches promptly to protect against potential exploits

CVEs Mentioned

CVE-2026-2329

Source: The Hacker News