What is CVE-2021-27486?

CVE-2021-27486 is a high-severity vulnerability in Fatek Winproladder, classified under Integer Underflow. CVSS score: 7.8/10. Published 2021-04-12.

How severe is CVE-2021-27486?

High severity. CVSS v3 base score is 7.8 out of 10.

Integer overflow in Fatek Winproladder

CVE-2021-27486

FATEK Automation WinProladder Versions 3.30 and prior is vulnerable to an integer underflow, which may cause an out-of-bounds write and allow an attacker to execute arbitrary code.

Published 2021-04-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Fatek Winproladder
Fatek Automation Winproladder — versions WinProladder Versions 3.30 and prior

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

us-cert.cisa.gov/ics/advisories/icsa-21-098-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2021-27486?: CVE-2021-27486 is a high-severity vulnerability in Fatek Winproladder, classified under Integer Underflow. CVSS score: 7.8/10. Published 2021-04-12.
How severe is CVE-2021-27486?: High severity. CVSS v3 base score is 7.8 out of 10.