What is CVE-2016-0858?

CVE-2016-0858 is a high-severity vulnerability in Advantech Webaccess, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.1/10. Published 2016-01-15.

How severe is CVE-2016-0858?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Advantech Webaccess

CVE-2016-0858

Race condition in Advantech WebAccess before 8.1 allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via a crafted request.

Vulnerability class: Buffer Overflow

Published 2016-01-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.051 (92.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.051 · newest: 0.051 · change: 0.000

Affected products

Advantech Webaccess

Weakness classification (CWE)

References

www.zerodayinitiative.com/advisories/ZDI-16-105
ics-cert.us-cert.gov/advisories/ICSA-16-014-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2016-0858?: CVE-2016-0858 is a high-severity vulnerability in Advantech Webaccess, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.1/10. Published 2016-01-15.
How severe is CVE-2016-0858?: High severity. CVSS v3 base score is 8.1 out of 10.