CVE-2026-66733: Memory Allocation with Excessive Size Value in Eukaryot sonic3air
CVE-2026-66733 is a high-severity vulnerability in Eukaryot sonic3air versions up to 26.03.28.0. It involves an unbounded memory allocation in the ReceivedPacketCache::enqueuePacket() function triggered by a crafted UDP packet with the mUniquePacketID set to the maximum uint32 value. This causes the server to allocate excessive memory, leading to a crash due to an uncaught exception.
AI Analysis
Technical Summary
The vulnerability in sonic3air before commit 2492d18 allows unauthenticated remote attackers to crash the server by sending a specially crafted UDP packet. The mUniquePacketID field is read without bounds checking, causing the server to allocate one CacheItem for each missing packet ID gap up to the maximum uint32 value. This unbounded allocation exhausts host memory and triggers a std::bad_alloc exception that terminates the process.
Potential Impact
Successful exploitation results in a denial of service by crashing the sonic3air server process due to memory exhaustion. There is no indication of code execution or data disclosure from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is indicated in the available data.
CVE-2026-66733: Memory Allocation with Excessive Size Value in Eukaryot sonic3air
Description
CVE-2026-66733 is a high-severity vulnerability in Eukaryot sonic3air versions up to 26.03.28.0. It involves an unbounded memory allocation in the ReceivedPacketCache::enqueuePacket() function triggered by a crafted UDP packet with the mUniquePacketID set to the maximum uint32 value. This causes the server to allocate excessive memory, leading to a crash due to an uncaught exception.
CVSS v4.0
Score 8.7high
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in sonic3air before commit 2492d18 allows unauthenticated remote attackers to crash the server by sending a specially crafted UDP packet. The mUniquePacketID field is read without bounds checking, causing the server to allocate one CacheItem for each missing packet ID gap up to the maximum uint32 value. This unbounded allocation exhausts host memory and triggers a std::bad_alloc exception that terminates the process.
Potential Impact
Successful exploitation results in a denial of service by crashing the sonic3air server process due to memory exhaustion. There is no indication of code execution or data disclosure from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is indicated in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-07-27T16:27:47.647Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a748820bf8831d539bf1b9f
Added to database: 08/06/2026, 13:12:00 UTC
Last enriched: 08/06/2026, 13:26:05 UTC
Last updated: 08/06/2026, 13:31:40 UTC
Views: 7
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