CVE-2026-41409Network attack vector

Unauthenticated code execution via late deserialization allowlist

Published Apr 27, 2026 · Updated Apr 27, 2026

Deserialization in Apache MINA 2.0.0 through 2.0.27, 2.1.0 through 2.1.10, and 2.2.0 through 2.2.5 allows remote attackers to execute code. The AbstractIoBuffer.getObject() path applies its class-name allowlist only after Java class resolution has already executed a referenced class's static initializer. Exposure requires an application to call IoBuffer.getObject(), including through ObjectSerializationCodecFactory, and accept attacker-controlled serialized data.

CVSS severity9.8
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in Apache MINA 2.0.0 through 2.0.27, 2.1.0 through 2.1.10, and 2.2.0 through 2.2.5 allows remote attackers to execute code. The AbstractIoBuffer.getObject() path applies its class-name allowlist only after Java class resolution has already executed a referenced class's static initializer. Exposure requires an application to call IoBuffer.getObject(), including through ObjectSerializationCodecFactory, and accept attacker-controlled serialized data.

The record

CVE
CVE-2026-41409
Published
Apr 27, 2026
Updated
Apr 27, 2026
Vendor
The Apache Software Foundation
Product
Apache MINA
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 27, 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=2.0.0 <=2.0.27
  2. Affected versionversion=2.1.0 <=2.1.10
  3. Affected versionversion=2.2.0 <=2.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache MINAversion=2.0.0 <=2.0.27; version=2.1.0 <=2.1.10; version=2.2.0 <=2.2.5

Published CVSS scores

9.8Apache Software FoundationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

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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