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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (7.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Qliktech International Ab Qlikview — versions 12.50.20000.0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48732 (exploit)
- www.qlik.com (product)
- www.vulncheck.com/advisories/qlikview-ftp-server-address-denial-of-service (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.