CVE-2026-66733 (GCVE-0-2026-66733)
Vulnerability from cvelistv5 – Published: 2026-08-06 12:58 – Updated: 2026-08-06 17:54 X_Open Source
VLAI
EPSS
VEX
Title
Sonic 3 A.I.R. Unbounded Memory Allocation DoS via ReceivedPacketCache
Summary
Sonic 3 A.I.R. before commit 2492d18 contains an unbounded memory allocation vulnerability in ReceivedPacketCache::enqueuePacket() that allows unauthenticated remote attackers to crash the server process by sending a crafted UDP packet with mUniquePacketID set to the maximum uint32 value. The mUniquePacketID field is read directly from the UDP wire-format packet header without bounds checking, causing the server to allocate one CacheItem per missing packet ID gap, exhausting available host memory and propagating an uncaught std::bad_alloc exception to std::terminate().
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 17:53 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Eukaryot/sonic3air/commit/2492… | patch |
| https://www.vulncheck.com/advisories/sonic-3-a-i-… | third-party-advisory |
Impacted products
Date Public
2026-07-29 00:00
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