PT-2026-6576 · Realvnc · Ultravnc Launcher

Chuyreds · Published 2026-02-05 · Updated 2026-02-05 · CVE-2020-37132

Positive Technologies (AI Summary)

CVSS v3.1

6.2

Medium

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions UltraVNC Launcher version 1.2.4.0

Description The software contains a denial of service condition in its password configuration. A local attacker can cause the application to crash by providing an overly long string, specifically 300 characters, as a password. This prevents normal launcher functionality.

Recommendations Update to a newer version that contains a fix for this vulnerability.

Exploit

Fix

DoS

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

CVE-2020-37132

Affected Products

Ultravnc Launcher

References · 6

• 🔥 https://exploit-db.com/exploits/48290 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-37132 · Security Note
• https://osv.dev/vulnerability/CVE-2020-37132 · Vendor Advisory
• https://vulncheck.com/advisories/ultravnc-launcher-password-denial-of-service · Note
• https://uvnc.com · Note
• https://t.me/CVEtracker/43824 · Telegram Post