PatchTheCVECVE-2016-0859: Integer overflow in the Kernel service in Advantech WebAccess before 8.1 allows remote attackers to execute ar
CVE-2016-0859 is a critical-severity flaw (CVSS 9.8) affecting webaccess. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Integer overflow in the Kernel service in Advantech WebAccess before 8.1 allows remote attackers to execute arbitrary code or cause a denial of service (stack-based buffer overflow) via a crafted RPC request.
Why this priority
- Critical severity
- EPSS top 5%: very likely to be exploited
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 7.6% (top 5%) |
| CISA exploited list | No |
| Weakness | CWE-189 |
| Published | 2016-01-15 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2016-0859?
webaccess: upgrade to newer than 8.0. Exact commands for each OS are on this page.
Is CVE-2016-0859 being exploited?
CVE-2016-0859 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2016-0859 affect?
CVE-2016-0859 affects webaccess. Severity is critical (CVSS 9.8). Integer overflow in the Kernel service in Advantech WebAccess before 8.1 allows remote attackers to execute arbitrary code or cause a denial of service (stack-based buffer overflow) via a crafted RPC request.
How urgent is CVE-2016-0859?
Priority 63/100. Critical severity; EPSS top 5%: very likely to be exploited; Remotely exploitable, no login, no user action
Software pages
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