CVE-2020-16207: advantech webaccess\/hmi_designer Heap-based Buffer Overflow
Vulnerability summary
CVE-2020-16207 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in advantech webaccess\/hmi_designer. EPSS estimates a 3.74% chance of exploitation in the next 30 days, higher than 89.7% of scored vulnerabilities.
Timeline
- 06-08-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
3.74%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
0.00 pp
From 3.74% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Advantech1 product
- webaccess\/hmi_designer≤ 2.1.9.31
1 vendor · 1 product
References
6 links
us-cert.cisa.gov/ics/advisories/icsa-20-219-02X Refsource MISCThird Party AdvisoryUS Government Resource