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CVE-2026-66733

7.5 · HIGH

Sonic 3 A.I.R.

Published Aug 6, 2026CWE-789EPSS 1.55%

Overview

CVE-2026-66733 is a high-severity vulnerability. It was published on August 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Eukaryot/sonic3air/commit/2492d1882cd2cf1cc1d7415729ce5c4fd686cd4fRefwww.vulncheck.com/advisories/sonic-3-a-i-r-unbounded-memory-allocation-dos-via-receivedpacketcache

How CyberStrike helps

Frequently asked questions

What is CVE-2026-66733?

CVE-2026-66733 is a high-severity vulnerability. It was published on August 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-66733?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-66733?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-66733?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-66733 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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