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CVE Vulnerability Details :
CVE-2020-37133
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-05 Feb, 2026 | 16:13
Updated At-05 Feb, 2026 | 18:44
Rejected At-
▼CVE Numbering Authority (CNA)
UltraVNC Launcher 1.2.4.0 - 'RepeaterHost' Denial of Service

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.

Affected Products
Vendor
UltraVNC Team
Product
UltraVNC Launcher
Versions
Affected
  • 1.2.4.0
Problem Types
TypeCWE IDDescription
CWECWE-121Stack-based Buffer Overflow
Type: CWE
CWE ID: CWE-121
Description: Stack-based Buffer Overflow
Metrics
VersionBase scoreBase severityVector
4.06.7MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Version: 4.0
Base score: 6.7
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
chuyreds
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.exploit-db.com/exploits/48288
exploit
https://www.uvnc.com/
product
https://www.vulncheck.com/advisories/ultravnc-launcher-repeaterhost-denial-of-service
third-party-advisory
Hyperlink: https://www.exploit-db.com/exploits/48288
Resource:
exploit
Hyperlink: https://www.uvnc.com/
Resource:
product
Hyperlink: https://www.vulncheck.com/advisories/ultravnc-launcher-repeaterhost-denial-of-service
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found