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Fencer Vulns
critical 9.8

CVE-2017-16720 in the critical feed json

A Path Traversal issue was discovered in WebAccess versions 8.3.2 and earlier.

published 2018-01-05 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7904

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
50.3%
EPSS 50.3% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

A Path Traversal issue was discovered in WebAccess versions 8.3.2 and earlier. An attacker has access to files within the directory structure of the target device.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-18-004-02A updated cvss 7.3

Advantech WebAccess (Update A)

  • Advantech WebAccess < 8.3
    affected: vendor fix

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Timeline

  1. Published
  2. First public exploit (EDB-44278)

Exploit prediction

50.32% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-44278 Advantech WebAccess < 8.3 - Directory Traversal / Remote Code Execution webapps, 2018-03-12

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • n/a Advantech WebAccess

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.