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TI-2026-63044 Aliases CVE-2026-93575GHSA-fcr3-v77c-x7hx

Io.netty/netty-codec-mqtt: netty: resource exhaustion in mqttdecoder

Priority LOW 39CWE-1035Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits. This leads to excessive memory and CPU consumption, resulting in a denial of service (DoS) due to an OutOfMemoryError.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00388 33rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat AMQ Broker 7——No fix listedCNA
Red HatRed Hat build of Apache Camel for Spring Boot 4——No fix listedCNA
Red HatRed Hat Fuse 7——Not affectedCNA
Red HatRed Hat JBoss Enterprise Application Platform 7——No fix listedCNA
Red HatRed Hat JBoss Enterprise Application Platform 7——No fix listedCNA
Red HatRed Hat JBoss Enterprise Application Platform 7——No fix listedCNA
Red HatRed Hat JBoss Enterprise Application Platform 7——No fix listedCNA
Red HatRed Hat Single Sign-On 7——No fix listedCNA
  • Red Hat AMQ Broker 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat build of Apache Camel for Spring Boot 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Fuse 7 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat JBoss Enterprise Application Platform 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat JBoss Enterprise Application Platform 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat JBoss Enterprise Application Platform 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat JBoss Enterprise Application Platform 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Single Sign-On 7 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 5

CPEVersionsRoleVendor
cpe:/a:redhat:amq_broker:77—Red Hat
cpe:/a:redhat:camel_spring_boot:44—Red Hat
cpe:/a:redhat:jboss_fuse:77—Red Hat
cpe:/a:redhat:jboss_enterprise_application_platform:77—Red Hat
cpe:/a:redhat:red_hat_single_sign_on:77—Red Hat
  • cpe:/a:redhat:amq_broker:7 Versions 7 — ·Red Hat
  • cpe:/a:redhat:camel_spring_boot:4 Versions 4 — ·Red Hat
  • cpe:/a:redhat:jboss_fuse:7 Versions 7 — ·Red Hat
  • cpe:/a:redhat:jboss_enterprise_application_platform:7 Versions 7 — ·Red Hat
  • cpe:/a:redhat:red_hat_single_sign_on:7 Versions 7 — ·Red Hat

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat AMQ Broker 7AffectedNo fix yet
Red Hat JBoss Enterprise Application Platform 7AffectedNo fix planned: Will not fix
Red Hat Single Sign-On 7AffectedNo fix planned: Will not fix
Red Hat build of Apache Camel for Spring Boot 4AffectedNo fix yet
Not affected: 1 product
  • Red Hat Fuse 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-93575
  2. 2026-10-03 Alias added: GHSA-fcr3-v77c-x7hx
  3. 2026-10-16 Affected versions changed · Red Hat

References

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences