CVE-2019-10991

Name: CVE-2019-10991
Creator: NVD / NIST
Published: 2019-06-28T21:15:11.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 8.98%

Last modified Jun 17, 2026

CVE-2019-10991 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In WebAccess/SCADA, Versions 8.3.5 and prior, multiple stack-based buffer overflow vulnerabilities are caused by a lack of proper validation of the length of user-supplied data. Exploitation of these vulnerabilities may allow remote code execution.. EPSS estimates a 8.98% chance of exploitation in the next 30 days.

Description

In WebAccess/SCADA, Versions 8.3.5 and prior, multiple stack-based buffer overflow vulnerabilities are caused by a lack of proper validation of the length of user-supplied data. Exploitation of these vulnerabilities may allow remote code execution.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

8.98%

94.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Advantech	Webaccess	<= 8.3.5

References

https://www.us-cert.gov/ics/advisories/icsa-19-178-05Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-19-586/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-588/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-589/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-592/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-594/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-619/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-620/Third Party Advisory, VDB Entry
https://www.us-cert.gov/ics/advisories/icsa-19-178-05Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-19-586/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-588/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-589/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-592/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-594/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-619/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-19-620/Third Party Advisory, VDB Entry

Timeline

Published: Jun 28, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-10991?

How severe is CVE-2019-10991?

CVE-2019-10991 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 8.98% probability of exploitation in the next 30 days.

How do I fix CVE-2019-10991?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-10991?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST