HOMEVULNERABILITIESCVE-2020-16207
HIGH

CVE-2020-16207

CWE-122Published: August 6, 2020· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

Advantech WebAccess HMI Designer, Versions 2.1.9.31 and prior. Multiple heap-based buffer overflow vulnerabilities may be exploited by opening specially crafted project files that may overflow the heap, which may allow remote code execution, disclosure/modification of information, or cause the application to crash.

NVD Source

Technical Analysis

CVE-2020-16207 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

advantech1 product(s)
webaccess\/hmi designer
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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

ADVISORYhttps://us-cert.cisa.gov/ics/advisories/icsa-20-219-02
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-950/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-951/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-955/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-958/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-959/
ADVISORYhttps://us-cert.cisa.gov/ics/advisories/icsa-20-219-02
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-950/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-951/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-955/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-958/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-959/

All References (12)

→
https://us-cert.cisa.gov/ics/advisories/icsa-20-219-02Third Party Advisory · US Government Resource
→
https://www.zerodayinitiative.com/advisories/ZDI-20-950/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-20-951/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-20-955/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-20-958/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-20-959/Third Party Advisory · VDB Entry
→
https://us-cert.cisa.gov/ics/advisories/icsa-20-219-02Third Party Advisory · US Government Resource
→
https://www.zerodayinitiative.com/advisories/ZDI-20-950/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-20-951/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-20-955/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-20-958/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-20-959/Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2020-16207
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-122
CISA KEVNo
Affected1 vendor(s)
PublishedAug 6, 2020

Related CVEs (CWE-122)

CVE-2021-25387
10.0
CVE-2022-34819
10.0
CVE-2021-21940
10.0
CVE-2026-46752
10.0
CVE-2025-23123
10.0
CVE-2026-44050
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-16207 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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