CVE-2025-41666
Published: 08 July 2025
Summary
CVE-2025-41666 is a high-severity Link Following (CWE-59) vulnerability in Certvde (inferred from references). Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 20.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-6 (Least Privilege) and CM-5 (Access Restrictions for Change).
Deeper analysis
CVE-2025-41666 is a link-following vulnerability (CWE-59) that permits replacement of a critical file consumed by a watchdog process. The flaw resides in an unspecified device or embedded component that initializes this watchdog after boot, allowing subsequent file operations to be redirected. It carries a CVSS 3.1 base score of 8.8.
A low-privileged remote attacker who already possesses file-access rights on the target can exploit the issue by substituting the watchdog’s referenced file. Once the watchdog initializes, the attacker obtains read, write, and execute permissions over arbitrary files on the device.
The single referenced advisory (VDE-2025-054) is hosted at certvde.com; no further mitigation details are supplied in the available data. The associated EPSS score remains flat at 0.0118 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-20398
Vulnerability details
A low privileged remote attacker with file access can replace a critical file used by the watchdog to get read, write and execute access to any file on the device after the watchdog has been initialized.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Vulnerability enables low-privileged file replacement in watchdog component leading directly to privilege escalation and full device compromise (CWE-59 symlink/file resolution abuse).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Restricts access to make changes to critical system components like the watchdog file, preventing low-privileged attackers from replacing it.
Enforces least privilege to ensure low-privileged remote users lack write access to critical files used by the watchdog process.
Monitors the integrity of critical files such as the watchdog file to identify unauthorized replacements by attackers before initialization.