CVE-2026-73784Network attack vector

Account impersonation via tampered SAML responses

Published Sep 11, 2026 · Updated Sep 11, 2026

Authentication bypass in HPE IceWall MFA 4.0 and Federation 4.0 allows remote attackers to impersonate another user via SAML responses. HPE identifies SAML response processing as the locus but has not disclosed which integrity or identity validation accepts the altered assertion. The affected SAML authentication option must be enabled, and successful exploitation grants the forged account's application access.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in HPE IceWall MFA 4.0 and Federation 4.0 allows remote attackers to impersonate another user via SAML responses. HPE identifies SAML response processing as the locus but has not disclosed which integrity or identity validation accepts the altered assertion. The affected SAML authentication option must be enabled, and successful exploitation grants the forged account's application access.

The record

CVE
CVE-2026-73784
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
Hewlett Packard Enterprise (HPE)
Product
HPE IceWall
Classifications
T1606.002
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Hewlett Packard Enterprise (HPE) · HPE IceWallversion=4.0

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1606.002SAML Tokens

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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