CVE-2026-44890

Description

Netty has Unbounded Direct Memory Consumption in its RedisDecoder

Description (MITRE) cveawg.mitre.org

Pulled from cveawg.mitre.org/api/cve/CVE-2026-44890 on 2026-07-11. Shown when MITRE's text differs from the cvelistV5 mirror.

Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending crafted Redis payloads across multiple connections without `\r\n`. This exhausts the server's direct memory pool (OutOfDirectMemoryError), preventing legitimate connections from being processed. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Overview

State

—

Assigner (CNA)

—

CVSS severity

high

CVSS score

7.5 / 10

CVSS vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Effective score

7.5 / 10 HIGH source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-44890

Linked Threat

CVE-2026-44890 — CVE-2026-44890

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-06-11 22:16:56 UTC

NVD last modified

2026-07-10 12:17:01 UTC

NVD CVSS v3.1

7.5 / 10 HIGH source: security-advisories@github.com

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability subscore

3.9 / 10

Impact subscore

3.6 / 10

EPSS score

0.0038 (probability of exploitation in next 30 days)

EPSS percentile

30.10% vs all CVEs — higher = more likely to be exploited, as of 2026-07-11

NVD-assigned CWE(s): CWE-400, CWE-770 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-36357

Assigner

GitHub_M

Published

Jun 11, 2026, 8:52:50 PM

Updated

Jul 21, 2026, 12:05:16 PM

EUVD base score (CVSS 3.1)

7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EUVD-reported EPSS

0.3900

Vendors

netty

Products

netty (< 4.1.135.Final)

netty (4.2.0.Final, < 4.2.15.Final)

Aliases

GHSA-6ghj-frrj-jjj3

ENISA description: Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending crafted Redis payloads across multiple connections without `\r\n`. This exhausts the server's direct memory pool (OutOfDirectMemoryError), preventing legitimate connections from being processed. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

MITRE references (3) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

• https://github.com/netty/netty/releases/tag/netty-4.1.135.Final x_refsource_MISC
• https://github.com/netty/netty/releases/tag/netty-4.2.15.Final x_refsource_MISC
• https://github.com/netty/netty/security/advisories/GHSA-6ghj-frrj-jjj3 x_refsource_CONFIRM

Web references (2)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nvd.nist.gov/vuln/detail/CVE-2026-44890 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-44890 tenable:www.cve.org

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

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  web:cybernews.com

  Ubiquiti has released emergency updates for its UniFi Network Application - a critical vulnerability allows hackers to compromise systems without credentials.

  2026-06-19 02:38 UTC
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  web:cybersecuritynews.com

  Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed "RoguePlanet," and confirmed it is actively developing a security patch to address the flaw.

  2026-06-19 02:38 UTC
• Netty, Denial of Service (DoS), CVE-2026-44890 (High) -DC-Jun2026-282
  web:dailycve.com

  Protection: Immediate Upgrade: Update the `netty-codec-redis` library to patched versions 4.2.15.Final or 4.1.135.Final, which include a limit on the length of the digit stream. Network Mitigation : Deploy a reverse proxy or firewall that can inspect and block malformed RESP traffic missing required `\r\n` terminators. Memory Limits: Enforce and monitor direct memory limits (-Dio.netty ...

  2026-06-19 02:38 UTC
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  web:fixtrading.org

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  2026-06-19 02:38 UTC
• Security Update Guide - Microsoft Security Response Center
  web:msrc.microsoft.com

  Security Update Guide - Microsoft Security Response Center

  2026-06-19 02:38 UTC
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  web:teamfighttactics.leagueoflegends.com

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  2026-06-19 02:38 UTC
• Addressing Exchange Server May 2026 vulnerability CVE-2026-42897
  web:techcommunity.microsoft.com

  UPDATE June 9, 2026 : Please see our release blog post for June 2026 Security Update for more information on this CVE : Released: June 2026 Exchange Server Security Updates | Microsoft Community Hub. On May 14, 2026 , Microsoft disclosed CVE - 2026 -42897, a reported vulnerability affecting Exchange Outlook Web Access (OWA). An attacker could exploit this issue by sending a specially crafted email ...

  2026-06-19 02:38 UTC
• CVE-2026-44890: Unbounded Direct Memory Consumption in Netty's RedisDecoder
  web:vulert.com

  Learn about CVE-2026-44890 , a high-severity vulnerability in Netty's RedisDecoder that can lead to memory exhaustion. Update your packages to mitigate risks.

  2026-06-19 02:38 UTC
• Microsoft working on a fix for RoguePlanet, a flaw that grants full PC ...
  web:www.malwarebytes.com

  Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.

  2026-06-19 02:38 UTC
• Oracle Critical Patch Update Advisory - January 2026
  web:www.oracle.com

  Oracle Critical Patch Update Advisory - January 2026 Description A Critical Patch Update is a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities in Oracle code and in third party components included in Oracle products. These patches are usually cumulative, but each advisory describes only the security patches added since the previous Critical ...

  2026-06-19 02:38 UTC

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