CVE-2021-29209Network attack vector

Script execution via DOM XSS and CRLF injection

Published May 25, 2021 · Updated Aug 3, 2024

DOM XSS and CRLF injection in HPE iLO 4 before 2.78 and iLO 5 before 2.44 allow remote authenticated users to inject web content. HPE has not published the affected web-interface endpoint or how it mishandles attacker-controlled input. Exploitation requires a privileged iLO user and interaction by another user, enabling browser-side script execution and manipulated HTTP headers.

CVSS severity4.8
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM XSS and CRLF injection in HPE iLO 4 before 2.78 and iLO 5 before 2.44 allow remote authenticated users to inject web content. HPE has not published the affected web-interface endpoint or how it mishandles attacker-controlled input. Exploitation requires a privileged iLO user and interaction by another user, enabling browser-side script execution and manipulated HTTP headers.

The record

CVE
CVE-2021-29209
Published
May 25, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 25, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NISTAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NISTCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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