High severity7.5NVD Advisory· Published Feb 5, 2026· Updated Jun 17, 2026
CVE-2020-37133
CVE-2020-37133
Description
UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in the Repeater Host configuration field that allows attackers to crash the application. Attackers can paste an overly long string of 300 characters into the Repeater Host property to trigger an application crash.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- UltraVNC Team/UltraVNC Launcherv5Range: 1.2.4.0
- Range: =1.2.4.0
Patches
Vulnerability mechanics
References
3- www.exploit-db.com/exploits/48288nvdExploitThird Party AdvisoryVDB Entry
- www.vulncheck.com/advisories/ultravnc-launcher-repeaterhost-denial-of-servicenvdThird Party Advisory
- www.uvnc.comnvdProduct
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