CVE-2026-93572: Netty's RedisArrayAggregator component
Affects nettySource GCVE Database
Not known to be exploited · CVSS 7.5 High.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10nettypkg:deb/ubuntu/netty?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu Pro 26.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/resoluteOther threats | Affected
| Fixed in– |
Ubuntu Pro 24.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in– |
Ubuntu Pro 22.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/jammyOther threats | Affected
| Fixed in– |
Ubuntu Pro 20.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/focalOther threats | Affected
| Fixed in– |
Ubuntu Pro 18.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available as per the Netty project advisory. Users should apply the official patches or upgrade to fixed versions provided by the Netty project to remediate this vulnerability.
Description
A vulnerability in Netty's RedisArrayAggregator component allows remote attackers to cause heap memory exhaustion by sending specially crafted nested Redis (RESP) array headers. This leads to denial of service (DoS) for applications using RedisDecoder with RedisArrayAggregator on untrusted traffic. The flaw arises because independent limits for array elements and nested array depth multiply, triggering excessive memory preallocation. The CVSS v3.1 score is 7.5, indicating medium severity. Fixed versions and remediation guidance are available from the Netty project advisory.
References
- ubuntu.com/security/CVE-2026-93572 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-93572 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2536963 (opens in a new tab)
- github.com/netty/netty/security/advisories/GHSA-r4xx-7fpg-j8xg (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-93572 (opens in a new tab)