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CVE-2019-10991

34
FAUCET Score

CVE-2019-10991 describes multiple stack-based buffer overflow vulnerabilities in Advantech WebAccess/SCADA versions 8.3.5 and prior. These flaws stem from insufficient validation of user-supplied data lengths, enabling remote code execution. With a CVSS score of 9.8 (Critical), this vulnerability is easily exploitable over the network with no authentication required, posing a significant risk of complete compromise (confidentiality, integrity, and availability). Despite its severity and high EPSS score, there is currently no public exploit code available, nor is there any evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.3.5CPE matchmatch criteria
cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.98%
Probability of exploitation in next 30 days
EPSS Percentile
94.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0898 is in the 90th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

us-cert.gov / ics/advisories/icsa-19-178-05
Third Party AdvisoryUS Government Resource
zerodayinitiative.com / advisories/ZDI-19-586
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-19-588
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-19-589
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-19-592
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-19-594
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-19-619
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-19-620
Third Party AdvisoryVDB Entry