CVE-2026-73587

Adjacent-network data tampering via improper certificate validation

Published Sep 23, 2026 · Updated Sep 23, 2026

Improper certificate validation in Dell Secure Connect Gateway Policy Manager before 5.34.00.16 allows attackers to read and alter data. Dell has not published the certificate-processing locus or the validation check that accepts an untrusted certificate. Exploitation requires unauthenticated adjacent-network access and bypasses transport protection without interrupting service.

CVSS severity6.8
Medium
EPSS probability0.08%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Dell Secure Connect Gateway Policy Manager before 5.34.00.16 allows attackers to read and alter data. Dell has not published the certificate-processing locus or the validation check that accepts an untrusted certificate. Exploitation requires unauthenticated adjacent-network access and bypasses transport protection without interrupting service.

The record

CVE
CVE-2026-73587
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
Dell
Product
Secure Connect Gateway Policy Manager
Classifications
CWE-295, CAPEC-475, CAPEC-459, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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=0 <5.36.00.16 or later

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Dell · Secure Connect Gateway Policy Managerversion=0 <5.36.00.16 or later

Published CVSS scores

6.8DellCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
CAPEC-475Signature Spoofing by Improper Validation
CAPEC-459Creating a Rogue Certification Authority Certificate
T1557Adversary-in-the-Middle

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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