CVE-2025-36728Public exploitNetwork attack vector

Client redirection via attacker-controlled installer hostname

Published Jul 25, 2025 · Updated Jul 25, 2025

Cross-site request forgery in SimpleHelp before 5.5.11 allows remote attackers to redirect a downloaded client to an attacker-controlled host. The customer, technician, and access download endpoints embed a postfix hostname in a legitimate installer without restricting it to the serving SimpleHelp server. Exploitation requires a user to open the crafted link and run the installer; the client then requests resources from the attacker-controlled host, enabling interface spoofing and code execution when chained with CVE-2025-36727.

CVSS severity6.3
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in SimpleHelp before 5.5.11 allows remote attackers to redirect a downloaded client to an attacker-controlled host. The customer, technician, and access download endpoints embed a postfix hostname in a legitimate installer without restricting it to the serving SimpleHelp server. Exploitation requires a user to open the crafted link and run the installer; the client then requests resources from the attacker-controlled host, enabling interface spoofing and code execution when chained with CVE-2025-36727.

The record

CVE
CVE-2025-36728
Published
Jul 25, 2025
Updated
Jul 25, 2025
Vendor
SimpleHelp
Product
SimpleHelp
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 2025Record 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 <5.5.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SimpleHelp · SimpleHelpversion=0 <5.5.11

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.3Tenable Network Security, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001User Execution Malicious Link

Public exploit references

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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