CVE-2018-25314
Published: 29 April 2026
Summary
CVE-2018-25314 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Alloksoft (inferred from references). Its CVSS base score is 8.6 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 6.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2018-25314 is a buffer overflow vulnerability (CWE-120) in Allok Soft WMV to AVI MPEG DVD WMV Converter version 4.6.1217. The flaw arises when an oversized string is supplied in the License Name field, triggering a buffer overflow that enables local attackers to execute arbitrary code. Attackers can craft malicious input incorporating shellcode with a structured exception handler (SEH) overwrite to bypass protections and gain code execution under the application's privileges. The vulnerability carries a CVSS v3.1 base score of 8.4 (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Local attackers with access to the system can exploit this issue with low attack complexity and no user interaction or privileges required. Successful exploitation allows arbitrary code execution, potentially compromising confidentiality, integrity, and availability at a high level through the application's context.
Advisories and references include the vendor sites at alloksoft.com and its WMV product page, an Exploit-DB proof-of-concept at exploit-db.com/exploits/44365, and a Vulncheck advisory detailing the buffer overflow in the affected software. No patches or specific mitigations are detailed in the provided CVE information.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2018-21835
Vulnerability details
Allok soft WMV to AVI MPEG DVD WMV Converter 4.6.1217 contains a buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized string in the License Name field. Attackers can craft a malicious input containing…
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shellcode with structured exception handler (SEH) overwrite to bypass protections and execute code with application privileges.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Local buffer overflow with SEH overwrite directly enables arbitrary code execution as the application process, mapping to exploitation for privilege escalation or code execution on a local system.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires validation and bounds checking of user inputs like the License Name field to prevent buffer overflows from oversized strings.
Enforces memory protections such as non-executable stacks, DEP, and ASLR to block SEH overwrite and arbitrary code execution in buffer overflow exploits.
Mandates timely flaw remediation, including patching or removing vulnerable software like Allok Converter 4.6.1217 affected by this buffer overflow.