What is CVE-2020-36994?

CVE-2020-36994 is a medium-severity vulnerability in Qliktech International Ab Qlikview, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-01-29.

How severe is CVE-2020-36994?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Qliktech International Ab Qlikview

CVE-2020-36994

QlikView 12.50.20000.0 contains a denial of service vulnerability in the FTP server address input field that allows local attackers to crash the application. Attackers can paste a 300-character buffer into the FTP server address field to trigger an application crash and prevent normal functionality.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (6.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Qliktech International Ab Qlikview — versions 12.50.20000.0

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2020-36994?: CVE-2020-36994 is a medium-severity vulnerability in Qliktech International Ab Qlikview, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-01-29.
How severe is CVE-2020-36994?: Medium severity. CVSS v3 base score is 6.2 out of 10.