CVE-2021-29715Network attack vector

Information exposure and service interruption via open ports

Published Aug 26, 2021 · Updated Sep 16, 2024

Information exposure and denial of service in IBM API Connect 5.0.0.0 through 5.0.8.11 allow remote attackers to obtain data or interrupt service. The management server leaves network ports open, exposing sensitive responses and a service-disruption path; IBM does not identify the ports or listening services. No authentication or user interaction is required, but published evidence does not establish whether a nondefault configuration is necessary.

CVSS severity6.5
Medium
EPSS probability1.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure and denial of service in IBM API Connect 5.0.0.0 through 5.0.8.11 allow remote attackers to obtain data or interrupt service. The management server leaves network ports open, exposing sensitive responses and a service-disruption path; IBM does not identify the ports or listening services. No authentication or user interaction is required, but published evidence does not establish whether a nondefault configuration is necessary.

The record

CVE
CVE-2021-29715
Published
Aug 26, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
API Connect
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=5.0.0.0
  2. Affected versionversion=5.0.8.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · API Connectversion=5.0.0.0; version=5.0.8.11

Published CVSS scores

6.5IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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