Quick answers
- Is CVE-2026-93572 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-93572 being exploited in the wild.
- How severe is CVE-2026-93572?
- High severity, with a CVSS score of 7.5, published 18 September 2026.
- Which products and versions are affected?
- Netty Project Netty <UNKNOWN>.
- Is there a fix for CVE-2026-93572?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-93572 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-93572?
- Check whether you run Netty Project Netty at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The RedisArrayAggregator component in Netty's Redis protocol decoder eagerly preallocates heap memory based on array size headers from RESP (Redis Serialization Protocol) messages without proper validation. A remote attacker can send specially crafted nested RESP array headers with extremely large declared sizes, causing heap exhaustion and denial of service. The vulnerability requires network access but no authentication.
Affected products
- Netty Project Netty <UNKNOWN>
Timeline
- 2026-09-18: disclosed