CVE-2021-20443Network attack vector

Client-side code execution via missing integrity checks

Published Feb 18, 2021 · Updated Sep 16, 2024

Missing Subresource Integrity checks in IBM Maximo for Civil Infrastructure 7.6.2 allow attackers to run altered third-party scripts. Maximo Data Loader loads executable scripts from third-party services without an SRI hash, preventing the user agent from verifying retrieved content. Exploitation requires low privileges and compromise of a referenced third-party service; resulting code runs in the application user's browser context.

CVSS severity8.8
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing Subresource Integrity checks in IBM Maximo for Civil Infrastructure 7.6.2 allow attackers to run altered third-party scripts. Maximo Data Loader loads executable scripts from third-party services without an SRI hash, preventing the user agent from verifying retrieved content. Exploitation requires low privileges and compromise of a referenced third-party service; resulting code runs in the application user's browser context.

The record

CVE
CVE-2021-20443
Published
Feb 18, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Maximo for Civil Infrastructure
Classifications
CWE-829, T1195.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 18, 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=7.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Maximo for Civil Infrastructureversion=7.6.2

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3IBM CorporationCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-829Inclusion of Functionality from Untrusted Control Sphere
T1195.002Compromise Software Supply Chain

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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