CVE-2025-21282
Published: 14 January 2025
Summary
CVE-2025-21282 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Microsoft Windows 10 1507. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation of Remote Services (T1210); ranked in the top 15.0% 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-16 (Memory Protection) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2025-21282 is a remote code execution vulnerability in the Windows Telephony Service, carrying a CVSS 3.1 base score of 8.8. The affected component is the Telephony service component within Windows, and the weakness is tracked under CWE-122.
An attacker can exploit the flaw over a network with low attack complexity and without requiring authentication. User interaction is needed, after which successful exploitation grants the attacker high impact on confidentiality, integrity, and availability on the target system.
The single reference URL points to the Microsoft Security Response Center advisory, which security practitioners should consult for official patch availability and mitigation guidance. The associated EPSS score has remained flat at 0.0225 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-2347
Vulnerability details
Windows Telephony Service Remote Code Execution Vulnerability
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
RCE in Windows Telephony Service enables exploitation of remote services for code execution.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly remediates the RCE vulnerability in Windows Telephony Service by requiring timely application of Microsoft patches.
Protects against heap-based buffer overflow (CWE-122) exploitation leading to RCE via memory safeguards like DEP and ASLR.
Reduces attack surface by restricting or disabling the unnecessary Windows Telephony Service functionality.