CVE-2020-4346Network attack vector

Unauthenticated sensitive-information disclosure via unsecured API

Published May 12, 2020 · Updated Sep 17, 2024

Information disclosure in IBM API Connect 2018.4.1.0 through 2018.4.1.10 allows remote attackers to obtain sensitive information via an unsecured API. The management server exposes an API without authentication and returns sensitive data to requests that should be protected. No credentials or user interaction are required, and the reported consequence is confidentiality loss without integrity or availability impact.

CVSS severity5.3
Medium
EPSS probability1.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in IBM API Connect 2018.4.1.0 through 2018.4.1.10 allows remote attackers to obtain sensitive information via an unsecured API. The management server exposes an API without authentication and returns sensitive data to requests that should be protected. No credentials or user interaction are required, and the reported consequence is confidentiality loss without integrity or availability impact.

The record

CVE
CVE-2020-4346
Published
May 12, 2020
Updated
Sep 17, 2024
Vendor
IBM
Product
API Connect
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record 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=2018.4.1.0
  2. Affected versionversion=2018.4.1.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · API Connectversion=2018.4.1.0; version=2018.4.1.10

Published CVSS scores

5.3IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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

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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