CVE-2021-29899Network attack vector

Authenticated service interruption via undisclosed network input

Published Mar 18, 2022 · Updated Sep 16, 2024

Denial of service in IBM Engineering Requirements Quality Assistant before 3.1.3 allows remote authenticated users to interrupt service. IBM has not published the affected component, malformed input, request path, or operation that triggers the availability failure. Network access with a valid low-privilege account is required, and successful exploitation affects availability without reported data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in IBM Engineering Requirements Quality Assistant before 3.1.3 allows remote authenticated users to interrupt service. IBM has not published the affected component, malformed input, request path, or operation that triggers the availability failure. Network access with a valid low-privilege account is required, and successful exploitation affects availability without reported data disclosure or modification.

The record

CVE
CVE-2021-29899
Published
Mar 18, 2022
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Engineering Requirements Quality Assistant
Classifications
T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 18, 2022CVE 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=On-Premises

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Engineering Requirements Quality Assistantversion=On-Premises

Published CVSS scores

4.0NVDAV:N/AC:L/Au:S/C:N/I:N/A:P
6.5IBMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.7IBMCVSS:3.0/S:U/AC:L/PR:L/I:N/A:H/AV:N/C:N/UI:N/RC:C/E:U/RL:O

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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