PatchTheCVECVE-2016-0856: Multiple stack-based buffer overflows in Advantech WebAccess before 8.1 allow remote attackers to execute arbi
CVE-2016-0856 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.
Multiple stack-based buffer overflows in Advantech WebAccess before 8.1 allow remote attackers to execute arbitrary code via unspecified vectors.
Why this priority
- Critical severity
- EPSS top 3%: 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 | 16.7% (top 3%) |
| CISA exploited list | No |
| Weakness | CWE-119 |
| 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-2016-0856?
webaccess: upgrade to newer than 8.0. Exact commands for each OS are on this page.
Is CVE-2016-0856 being exploited?
CVE-2016-0856 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-2016-0856 affect?
CVE-2016-0856 affects webaccess. Severity is critical (CVSS 9.8). Multiple stack-based buffer overflows in Advantech WebAccess before 8.1 allow remote attackers to execute arbitrary code via unspecified vectors.
How urgent is CVE-2016-0856?
Priority 64/100. Critical severity; EPSS top 3%: very likely to be exploited; Remotely exploitable, no login, no user action
Software pages
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