PatchTheCVECVE-2016-0855: Directory traversal vulnerability in Advantech WebAccess before 8.1 allows remote attackers to list arbitrary
CVE-2016-0855 is a high-severity flaw (CVSS 7.5) affecting webaccess. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Directory traversal vulnerability in Advantech WebAccess before 8.1 allows remote attackers to list arbitrary virtual-directory files via unspecified vectors.
Why this priority
- High severity
- EPSS top 8%: very likely to be exploited
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 4.7% (top 8%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| 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-2016-0855?
webaccess: upgrade to newer than 8.0. Exact commands for each OS are on this page.
Is CVE-2016-0855 being exploited?
CVE-2016-0855 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-2016-0855 affect?
CVE-2016-0855 affects webaccess. Severity is high (CVSS 7.5). Directory traversal vulnerability in Advantech WebAccess before 8.1 allows remote attackers to list arbitrary virtual-directory files via unspecified vectors.
How urgent is CVE-2016-0855?
Priority 54/100. High severity; EPSS top 8%: very likely to be exploited; Remotely exploitable, no login, no user action
Software pages
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