CVE-2025-41687
Published: 23 July 2025
Summary
CVE-2025-41687 is a critical-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Certvde (inferred from references). Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 38.4% 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 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2025-41687 is a stack-based buffer overflow vulnerability, corresponding to CWE-121, in the u-link Management API. Published on 2025-07-23, it affects devices that utilize this API and carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), reflecting critical severity due to its potential for high-impact confidentiality, integrity, and availability consequences.
An unauthenticated remote attacker can exploit the vulnerability over the network with low attack complexity and no privileges or user interaction required. Successful exploitation enables the attacker to gain full access on the affected devices.
Mitigation guidance is available in the advisory published by CERT VDE at https://certvde.com/de/advisories/VDE-2025-052.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-22434
Vulnerability details
An unauthenticated remote attacker may use a stack based buffer overflow in the u-link Management API to gain full access on the affected devices.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in network-accessible management API enables unauthenticated remote code execution on public-facing devices.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Information input validation directly prevents stack-based buffer overflows in the u-link Management API by enforcing bounds checking and sanitization of unauthenticated remote inputs.
Memory protection mechanisms like stack canaries, ASLR, and DEP comprehensively mitigate exploitation of the stack buffer overflow vulnerability even if invalid inputs reach the API.
Flaw remediation ensures timely patching of the specific stack-based buffer overflow in the u-link Management API to eliminate the vulnerability.