What is CVE-2019-3954?

CVE-2019-3954 is a critical-severity vulnerability in Advantech Webaccess, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-06-19.

How severe is CVE-2019-3954?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Advantech Webaccess

CVE-2019-3954

Stack-based buffer overflow in Advantech WebAccess/SCADA 8.4.0 allows a remote, unauthenticated attacker to execute arbitrary code by sending a crafted IOCTL 81024 RPC call.

Vulnerability class: Buffer Overflow

EPSS: 0.039 (89.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Advantech Webaccess — versions 8.4.0
N/a Advantech Webaccess/scada — versions 8.4.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

vulnreport@tenable.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-3954?: CVE-2019-3954 is a critical-severity vulnerability in Advantech Webaccess, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-06-19.
How severe is CVE-2019-3954?: Critical severity. CVSS v3 base score is 9.8 out of 10.