CVE-2017-16720

highpriority · attend · 67EPSS 0.503 · 99 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · functional

Likely / severe?

50.3% (99th) EPSS

CVSS 10 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedWebAccesscisa_csaf_ot
Advantech has released WebAccess Version 8.3 to address the reported vulnerabilities. Users can download the latest version of WebAccess (registration required)
http://www.advantech.com/industrial-automation/webaccess/download

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.3–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.07.3highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · CISA US

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimaryCWE-22US

exploits (2)

Public proof-of-concept and weaponised exploit code.

EDB-44278Advantech WebAccess < 8.3 - Directory Traversal / Remote Code Executionfunctional · exploit_db
CN016/WebAccess-CVE-2017-16720-WebAccess远程命令执行漏洞(CVE-2017-16720)复现PoC · poc_in_github

affected products (4)

Products and version ranges known to be affected.

WebAccess: versions prior to 8.3all versionscisa_csaf_otUS
Advantech WebAccess< 8.3cisa_csaf_otUS
n/a Advantech WebAccess≤ Advantech WebAccessenisa_euvdEU
advantech webaccess≤ 8.3.2nvdUScpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-18-004-02AAdvantech WebAccess (Update A)2018-01-04icsa · cisa_csaf_otUS
ATTENTION: Remotely exploitable/low skill level to exploit.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2018-01-05modified 2026-06-17

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+12523 more

references (16)

External citations — patches, advisories, analysis.

scry

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