CVE-2026-41602Network attack vector

Service interruption via wrapped frame length

Published Apr 28, 2026 · Updated Aug 26, 2026

Integer overflow in Apache Thrift before 0.23.0 allows remote attackers to interrupt services using the Go TFramedTransport. TFramedTransport.Flush converts an in-memory write-buffer length to uint32 without rejecting lengths above 4 GiB, so the frame header wraps while the full buffer is transmitted. Reachability requires the Go framed transport and an unauthenticated peer able to induce an oversized response; the bounded impact is unexpected behavior or resource exhaustion, not data access.

CVSS severity7.5
High
EPSS probability1.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Apache Thrift before 0.23.0 allows remote attackers to interrupt services using the Go TFramedTransport. TFramedTransport.Flush converts an in-memory write-buffer length to uint32 without rejecting lengths above 4 GiB, so the frame header wraps while the full buffer is transmitted. Reachability requires the Go framed transport and an unauthenticated peer able to induce an oversized response; the bounded impact is unexpected behavior or resource exhaustion, not data access.

The record

CVE
CVE-2026-41602
Published
Apr 28, 2026
Updated
Aug 26, 2026
Vendor
The Apache Software Foundation
Product
Apache Thrift
Classifications
CWE-190, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.23.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Thriftversion=0 <0.23.0
389 Directory Server · Red Hat Advanced Cluster Management for KubernetesAffected versions are unavailable in this record.
389 Directory Server · Multicluster Global HubAffected versions are unavailable in this record.
389 Directory Server · Red Hat OpenShift distributed tracing 3.9.3Affected versions are unavailable in this record.
389 Directory Server · Red Hat OpenShift GitOpsAffected versions are unavailable in this record.
389 Directory Server · Red Hat multicluster global hubAffected versions are unavailable in this record.
389 Directory Server · Red Hat AI Inference ServerAffected versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5Red Hat Product SecurityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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