HOMEVULNERABILITIESCVE-2017-16720
CRITICALPOC

CVE-2017-16720

CWE-22Published: January 5, 2018· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2017-16720 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

A proof-of-concept (PoC) exploit exists for CVE-2017-16720. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

advantech1 product(s)
webaccess
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/102424
ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-18-004-02
ADVISORYhttps://www.exploit-db.com/exploits/44278/
ADVISORYhttps://www.tenable.com/security/research/tra-2018-23
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-18-024/
ADVISORYhttp://www.securityfocus.com/bid/102424
ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-18-004-02
ADVISORYhttps://www.exploit-db.com/exploits/44278/
ADVISORYhttps://www.tenable.com/security/research/tra-2018-23

All References (9)

→
http://www.securityfocus.com/bid/102424Third Party Advisory · VDB Entry
→
https://ics-cert.us-cert.gov/advisories/ICSA-18-004-02Broken Link · Third Party Advisory · US Government Resource
→
https://www.exploit-db.com/exploits/44278/Exploit · Third Party Advisory · VDB Entry
→
https://www.tenable.com/security/research/tra-2018-23Third Party Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-18-024/Third Party Advisory
→
http://www.securityfocus.com/bid/102424Third Party Advisory · VDB Entry
→
https://ics-cert.us-cert.gov/advisories/ICSA-18-004-02Broken Link · Third Party Advisory · US Government Resource
→
https://www.exploit-db.com/exploits/44278/Exploit · Third Party Advisory · VDB Entry
→
https://www.tenable.com/security/research/tra-2018-23Third Party Advisory

Quick Facts

CVE IDCVE-2017-16720
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-22
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedJan 5, 2018

Related CVEs (CWE-22)

CVE-2009-4000
10.0
CVE-2009-3792
10.0
CVE-2009-1161
10.0
CVE-2008-3685
10.0
CVE-2009-0841
10.0
CVE-2010-1462
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-16720 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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