CVE-2026-73785Network attack vector

Unauthenticated service interruption via undisclosed requests

Published Sep 11, 2026 · Updated Sep 11, 2026

Denial of service in HPE IceWall Federation Agent and Proxy 4.0 allows remote attackers to interrupt authentication services. HPE has not disclosed the request, parser, or processing error that triggers the service interruption. No authentication is required, and the published impact is limited to availability; public material does not distinguish a crash from a hang.

CVSS severityUnavailable
Unscored
EPSS probability0.40%
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 HPE IceWall Federation Agent and Proxy 4.0 allows remote attackers to interrupt authentication services. HPE has not disclosed the request, parser, or processing error that triggers the service interruption. No authentication is required, and the published impact is limited to availability; public material does not distinguish a crash from a hang.

The record

CVE
CVE-2026-73785
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
Hewlett Packard Enterprise (HPE)
Product
HPE IceWall
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

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?

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

  1. Affected versionversion=4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
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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