What is CVE-2019-3951?

CVE-2019-3951 is a critical-severity vulnerability in Advantech Webaccess, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2019-12-12.

How severe is CVE-2019-3951?

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

Is CVE-2019-3951 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Advantech Webaccess

CVE-2019-3951

Advantech WebAccess before 8.4.3 allows unauthenticated remote attackers to execute arbitrary code or cause a denial of service (memory corruption) due to a stack-based buffer overflow when handling IOCTL 70533 RPC messages.

Vulnerability class: Buffer Overflow

EPSS: 0.036 (88.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Advantech Webaccess
N/a Advantech Webaccess/scada — versions 8.4.2.

Weakness classification (CWE)

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2019-3951?: CVE-2019-3951 is a critical-severity vulnerability in Advantech Webaccess, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2019-12-12.
How severe is CVE-2019-3951?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-3951 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.