CVE-2018-25307
Published: 29 April 2026
Summary
CVE-2018-25307 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability. 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 4.6th 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
SysGauge Pro version 4.6.12 is affected by CVE-2018-25307, a local buffer overflow vulnerability in the Register function. This flaw allows local attackers to overwrite the structured exception handler (SEH) by supplying a crafted unlock key. The vulnerability, classified under CWE-120, enables attackers to inject shellcode through the Unlock Key field during the registration process, leading to arbitrary code execution with the privileges of the application. It has 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 vulnerability without requiring privileges or user interaction beyond providing the malicious input during registration. Successful exploitation allows attackers to execute arbitrary code, potentially compromising the application's functionality and enabling further system-level actions depending on the application's context and privileges.
Advisories, including one from Vulncheck detailing the SysGauge Pro local buffer overflow SEH vulnerability, provide technical analysis of the issue. A proof-of-concept exploit is publicly available on Exploit-DB (exploit 44455), demonstrating the SEH overwrite and shellcode injection technique. No patch information is specified in the available details.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2018-21828
Vulnerability details
SysGauge Pro 4.6.12 contains a local buffer overflow vulnerability in the Register function that allows local attackers to overwrite the structured exception handler by supplying a crafted unlock key. Attackers can inject shellcode through the Unlock Key field during registration…
more
to execute arbitrary code with application privileges.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Local SEH overwrite buffer overflow directly enables arbitrary code execution via crafted input (shellcode injection) in a client/desktop application, mapping to exploitation primitives for client execution and local privilege escalation.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Information Input Validation directly prevents buffer overflows by ensuring the Unlock Key field rejects crafted inputs exceeding buffer limits.
Memory Protection mechanisms like stack canaries, ASLR, and DEP mitigate SEH overwrite and shellcode execution from buffer overflows.
Flaw Remediation requires timely patching of the buffer overflow vulnerability in SysGauge Pro's Register function.