CVE-2021-29854Network attack vector

Web response poisoning via unvalidated Host header

Published May 3, 2022 · Updated Sep 16, 2024

Host header injection in IBM Maximo Asset Management 7.6.1.1 and 7.6.1.2 allows remote authenticated users to poison web responses. The web tier accepts an attacker-controlled Host header without validating it against an allowed-host list, permitting that value to influence generated responses. A valid low-privilege session is required, and successful abuse can enable cross-site scripting, cache poisoning, or session hijacking rather than service interruption.

CVSS severity5.4
Medium
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Host header injection in IBM Maximo Asset Management 7.6.1.1 and 7.6.1.2 allows remote authenticated users to poison web responses. The web tier accepts an attacker-controlled Host header without validating it against an allowed-host list, permitting that value to influence generated responses. A valid low-privilege session is required, and successful abuse can enable cross-site scripting, cache poisoning, or session hijacking rather than service interruption.

The record

CVE
CVE-2021-29854
Published
May 3, 2022
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Maximo Asset Management
Classifications
CWE-116, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.6.1.1
  2. Affected versionversion=7.6.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Maximo Asset Managementversion=7.6.1.1; version=7.6.1.2

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
5.4IBM CorporationCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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.

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

CWE-116Improper Encoding or Escaping of Output
T1190Exploit Public-Facing Application

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo