Buffer overflow in Ultravnc Team Launcher
CVE-2020-37132
UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allows local attackers to crash the application. Attackers can paste an overly long 300-character string into the password field to trigger an application crash and prevent normal launcher 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:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.9% 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
- Ultravnc Team Launcher — versions 1.2.4.0
- Uvnc Ultravnc
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48290 (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.uvnc.com/ (Product, product)
- www.vulncheck.com/advisories/ultravnc-launcher-password-denial-of-service (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-37132?
- CVE-2020-37132 is a medium-severity vulnerability in Ultravnc Team Launcher, classified under Stack-based Buffer Overflow. CVSS score: 6.2/10. Published 2026-02-05.
- How severe is CVE-2020-37132?
- Medium severity. CVSS v3 base score is 6.2 out of 10.