CVE-2017-12149Known exploitationPublic exploitNetwork attack vectorHinoki check available

Remote code execution via unrestricted HTTP deserialization

Published Oct 4, 2017 · Updated Oct 7, 2026

Deserialization in Red Hat JBoss Application Server as shipped with EAP 5.2 allows remote attackers to execute code via crafted HTTP requests. The HTTP Invoker's ReadOnlyAccessFilter.doFilter method deserializes attacker-supplied objects without restricting permitted classes. Exploitation requires a reachable HTTP Invoker context; successful payloads execute code in the application server process without authentication.

CVSS severity9.8
Critical
EPSS probability90.71%
Next 30 days · Nov 1, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Deserialization in Red Hat JBoss Application Server as shipped with EAP 5.2 allows remote attackers to execute code via crafted HTTP requests. The HTTP Invoker's ReadOnlyAccessFilter.doFilter method deserializes attacker-supplied objects without restricting permitted classes. Exploitation requires a reachable HTTP Invoker context; successful payloads execute code in the application server process without authentication.

The record

CVE
CVE-2017-12149
Published
Oct 4, 2017
Updated
Oct 7, 2026
Vendor
libuser Project
Product
JBoss Application Server
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 4, 2017CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

libuser Project · JBoss Application Serverversion=n/a

Published CVSS scores

9.8CISACVSS: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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsShadowserver observations through Sep 28, 2026. Gaps indicate unavailable data.
Sep 22, 2026Sep 28, 2026
View daily counts
Reporting dayUnique IPs
Sep 22, 20262
Sep 23, 2026Unavailable
Sep 24, 2026Unavailable
Sep 25, 2026Unavailable
Sep 26, 2026Unavailable
Sep 27, 2026Unavailable
Sep 28, 2026Unavailable
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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