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VulnerabilityPublished Updated

CVE-2026-93572: Netty's RedisArrayAggregator component

Affects nettySource GCVE Database

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Authoritative record:CVE-2026-93572· High 7.5

Not known to be exploited · CVSS 7.5 High.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
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:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Ubuntu 26.10nettypkg:deb/ubuntu/netty?arch=source&distro=stonkingOther threatsAffected
  • =1:4.1.48-16
  • =1:4.1.48-16ubuntu1
Fixed in–
Ubuntu Pro 26.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/resoluteOther threatsAffected
  • 1:4.1.48-10 – 1:4.1.48-16ubuntu0.1~esm2
7 affected builds
Fixed in–
Ubuntu Pro 24.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/nobleOther threatsAffected
  • 1:4.1.48-7 – 1:4.1.48-9ubuntu0.2+esm2
11 affected builds
Fixed in–
Ubuntu Pro 22.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/jammyOther threatsAffected
  • 1:4.1.48-4 – 1:4.1.48-4+deb11u2ubuntu0.2+esm1
10 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/focalOther threatsAffected
  • 1:4.1.33-1 – 1:4.1.45-1ubuntu0.1~esm7
10 affected builds
Fixed in–
Ubuntu Pro 18.04 LTSnettypkg:deb/ubuntu/netty?arch=source&distro=esm-apps/bionicOther threatsAffected
  • 1:4.1.7-4 – 1:4.1.7-4ubuntu0.1~esm1
10 affected builds
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

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