CVE-2019-6550: advantech webaccess Stack-based Buffer Overflow
CVSS: 9.8v3.1CriticalModified
Published 05-04-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-6550 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in advantech webaccess. EPSS estimates a 6.09% chance of exploitation in the next 30 days, higher than 93.3% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
6.09%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 05-04-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Advantech WebAccess/SCADA, Versions 8.3.5 and prior. Multiple stack-based buffer overflow vulnerabilities, caused by a lack of proper validation of the length of user-supplied data, may allow remote code execution.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
6.09%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
0.00 pp
From 6.09% on 21-09-2026
21-09-202621-10-2026
EPSS score6.09%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Advantech2 products
- webaccess≤ 8.3.5
- webaccess\/scadaVersions 8.3.5 and prior.
1 vendor · 2 products
References
2 links- ics-cert.us-cert.gov/advisories/ICSA-19-092-01X Refsource MISCThird Party AdvisoryUS Government Resource