CVE-2025-53606Network attack vector

Unauthenticated server compromise via faulty Fury allowlist

Published Aug 8, 2025 · Updated Nov 4, 2025

Unsafe deserialization in Apache Seata 2.4.0 allows remote attackers to compromise the server through crafted Fury-serialized data. FurySerializerFactory checks each incoming class name with a plain contains lookup against configured allow-class patterns, so disallowed classes can pass the intended filter. Network access to a server using the Fury serializer is sufficient; successful exploitation can read or alter server data and interrupt service.

CVSS severity9.8
Critical
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in Apache Seata 2.4.0 allows remote attackers to compromise the server through crafted Fury-serialized data. FurySerializerFactory checks each incoming class name with a plain contains lookup against configured allow-class patterns, so disallowed classes can pass the intended filter. Network access to a server using the Fury serializer is sufficient; successful exploitation can read or alter server data and interrupt service.

The record

CVE
CVE-2025-53606
Published
Aug 8, 2025
Updated
Nov 4, 2025
Vendor
The Apache Software Foundation
Product
Apache Seata
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record 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=2.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Seataversion=2.4.0

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

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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