SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-16720

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

EXPLOIT ✓CRITICAL 9.8EPSS 50.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 50.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

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.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
50.32% probability · 99th percentile
Public exploits
1 in Exploit-DB · verified · first 12 March 2018
CISA KEV
Not listed
Weakness
CWE-22
Affected
advantech/webaccess
Source
ics-cert@hq.dhs.gov
EPSS trend
0%28%55%21 September 2026: 35.60%22 September 2026: 50.32%27 October 2026: 50.32%21 September 202627 October 2026

EPSS moved from 35.6% on 21 September 2026 to 50.3% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-44278source ↗Advantech WebAccess < 8.3 - Directory Traversal / Remote Code Executionwindows · Chris Lynewebapps12 March 2018yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.