CVE-2025-34121Public exploitNetwork attack vector

Unauthenticated RCE via arbitrary PHP upload

Published Jul 16, 2025 · Updated Jul 28, 2026

Unrestricted file upload in Idera Uptime Infrastructure Monitor 7.2 and earlier allows remote attackers to execute PHP without authentication. The wizards/post2file.php endpoint uses the file_name parameter as a webroot filename and writes the script parameter as its contents. No account or user interaction is required; successful requests run attacker-chosen PHP as the web server user.

CVSS severity9.3
Critical
EPSS probability2.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unrestricted file upload in Idera Uptime Infrastructure Monitor 7.2 and earlier allows remote attackers to execute PHP without authentication. The wizards/post2file.php endpoint uses the file_name parameter as a webroot filename and writes the script parameter as its contents. No account or user interaction is required; successful requests run attacker-chosen PHP as the web server user.

The record

CVE
CVE-2025-34121
Published
Jul 16, 2025
Updated
Jul 28, 2026
Vendor
Idera, Inc.
Product
Uptime Infrastructure Monitor
Classifications
CWE-306, CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Idera, Inc. · Uptime Infrastructure Monitorversion=0 <=7.2

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo