CVE-2023-2866: advantech webaccess Insufficient Type Distinction
CVSS: 7.8v3.1HighModified
Published 07-06-2023Last modified 16-01-2025
Vulnerability summary
CVE-2023-2866 is a high (CVSS 7.8) Insufficient Type Distinction vulnerability in advantech webaccess. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.2% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 07-06-2023PublishedVulnerability first disclosed.
- 16-01-2025Last modifiedVulnerability information updated.
Description
If an attacker can trick an authenticated user into loading a maliciously crafted .zip file onto Advantech WebAccess version 8.4.5, a web shell could be used to give the attacker full control of the SCADA server.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSources2 sources · 7.3–7.8
- CVE.orgCNA7.3HighCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.14%
Chance of exploitation in the next 30 days
Percentile
3%
Versus all other CVEs
30-day change
0.00 pp
From 0.14% on 21-09-2026
21-09-202621-10-2026
EPSS score0.14%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-351Insufficient Type DistinctionThe product does not properly distinguish between different types of elements in a way that leads to insecure behavior.
- CWE-345Insufficient Verification of Data AuthenticityThe product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
Affected systems
Advantech2 products
- webaccess8.4.5
- webaccess\/scada8.4.5
1 vendor · 2 products
