Unauthenticated RCE in HP Poly Voice ICE SDP Parsing
CVE-2026-0826 is a critical unauthenticated stack-based buffer overflow affecting HP Poly Voice/VoIP devices on the Linux platform, including Poly VVX and Trio product lines. The flaw is exposed when Interactive Connectivity Establishment (ICE) is enabled. According to the provided reporting, the vulnerable code is in SDP parsing of ICE candidate attributes within the polyapp binary, specifically in the helper function ParseICECandidate, which copies attacker-controlled candidate data into a 256-byte stack buffer using memcpy without enforcing a length check. A remote attacker can send a crafted SIP INVITE containing an oversized SDP candidate attribute to trigger the overflow, overwrite control data including the program counter, and achieve code execution. Rapid7 reported exploitation against firmware 6.4.7.4477 and noted that although NX is enabled, practical exploitation is facilitated because PIE is disabled and shared libraries such as libc load at fixed addresses, enabling ROP-based bypass of NX.
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Impact, mitigation & remediation
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Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
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A critical unauthenticated stack-based buffer overflow in Poly VoIP phones that can be exploited via crafted SIP INVITE messages to achieve remote code execution/root-level administrative access.
A critical unauthenticated stack-based buffer overflow in SDP parsing on ICE-enabled HP Poly VoIP phones that can allow remote code execution with root privileges.
A specific vulnerability identified as CVE-2026-0826 that is being discussed in the context of adding an exploit module to Metasploit.
A critical unauthenticated stack-based buffer overflow / memory corruption vulnerability in multiple HP Poly VoIP devices that can allow a remote attacker to gain control of an affected device without authentication.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.