CVE-2025-34121
Published: 16 July 2025
Summary
CVE-2025-34121 is a critical-severity Missing Authentication for Critical Function (CWE-306) vulnerability. Its CVSS base score is 9.3 (Critical).
Operationally, ranked in the top 0.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
An unauthenticated arbitrary file upload vulnerability affects Idera Up.Time Monitoring Station versions up to and including 7.2. The wizards/post2file.php script accepts arbitrary POST parameters, enabling attackers to upload crafted PHP files directly to the webroot. The flaw is tracked under CWE-306 and CWE-434 and is assigned a CVSS 4.0 score of 9.3.
Unauthenticated remote attackers can exploit the issue over the network to upload and execute malicious PHP code, resulting in remote code execution as the web server user. Public exploit code, including a Metasploit module and an entry on Exploit-DB, has been available for the vulnerability, which is noted as a bypass for the earlier CVE-2015-9263.
The current EPSS score of 0.8057 matches its recorded peak with no material rise from a low starting point. Available references consist primarily of exploit archives and an archived advisory without details on patches or mitigation steps.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-21749
Vulnerability details
An unauthenticated arbitrary file upload vulnerability exists in Idera Up.Time Monitoring Station versions up to and including 7.2. The `wizards/post2file.php` script accepts arbitrary POST parameters, allowing attackers to upload crafted PHP files to the webroot. Successful exploitation results in remote…
more
code execution as the web server user. NOTE: The bypass for this vulnerability is tracked as CVE-2015-9263.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requires established identification and authentication to unlock, mitigating missing authentication for continued system access.
Requiring identification and rationale for actions allowed without authentication ensures critical functions are not left unprotected by forcing review of authentication requirements.
Authorizing mobile device connections to organizational systems ensures authentication is performed for this critical access function.
Guarantees critical functions are protected by mandatory invocation of the access control mechanism.
Auditing sessions makes it possible to detect access to critical functions without required authentication.
The assessment process confirms authentication is present and effective for critical functions, preventing exploitation from missing authentication.
Certification assesses that critical functions have required authentication controls in place.
Disabling non-essential functions and services eliminates the need to secure them, reducing exposure from missing authentication on unnecessary components.