Latest vulnerabilities for vendor "ultravnc"

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ultravnc ultravnc viewer

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ultravnc tabbed viewer

ultravnc vnc viewer

UltraVNC UltraVNC RepeaterUltraVNC repeater HTTP server global buffer overflow via long URI (pre-auth RCE)

Risk 86

Severity

9.3

First published (updated )

CVE-2026-7840

UltraVNC UltraVNC RepeaterUltraVNC repeater ships hardcoded default admin password allowing unauthenticated admin access

Risk 66

Severity

9.1

First published (updated )

CVE-2026-7839

UltraVNC UltraVNC ViewerUltraVNC viewer heap buffer overflow via integer overflow in RFB connection-failure reason length

Risk 77

Severity

8.7

First published (updated )

CVE-2026-7838

UltraVNC UltraVNC RepeaterUltraVNC repeater authenticated out-of-bounds write in rule parser via oversized token

Risk 66

Severity

7.2

First published (updated )

CVE-2026-7829

UltraVNC UltraVNC RepeaterUltraVNC repeater integer overflow in win_log malloc leading to heap overflow

Risk 27

Severity

5.3

First published (updated )

CVE-2026-7828

UltraVNC UltraVNCUltraVNC vncauth.c uses time-seeded libc rand() to generate VNC authentication challenge bytes

Risk 40

Severity

6.5

First published (updated )

CVE-2026-44040

UltraVNC UltraVNCUltraVNC vncWc2Mb calls wcslen() before validating that the wide string is NUL-terminated

Risk 40

Severity

6.5

First published (updated )

CVE-2026-44041

UltraVNC RepeaterUltraVNC repeater wi_uudecode off-by-one in base64 decode boundary check

Risk 20

Severity

3.7

First published (updated )

CVE-2026-44042

UltraVNC UltraVNCUltraVNC Service version.dll uncontrolled search path

Risk 49

Severity

6.4

EPSS

0.01%

First published (updated )

CVE-2026-4962

UltraVNC UltraVNC LauncherUltraVNC Launcher 1.2.2.4 Denial of Service Buffer Overflow

Risk 38

Severity

6.9

First published (updated )

CVE-2019-25601

UltraVNC UltraVNC ViewerUltraVNC Viewer 1.2.2.4 Denial of Service via Buffer Overflow

Risk 40

Severity

7.1

First published (updated )

CVE-2019-25600

UltraVNC UltraVNCUltraVNC Windows Service cryptbase.dll uncontrolled search path

Risk 49

Severity

7.3

EPSS

0.01%

First published (updated )

CVE-2026-3787

UltraVNC UltraVNC LauncherUltraVNC Launcher 1.2.4.0 - 'RepeaterHost' Denial of Service

Risk 43

Severity

7.5

First published (updated )

CVE-2020-37133

UltraVNC UltraVNC ViewerUltraVNC Viewer 1.2.4.0 - 'VNCServer' Denial of Service

Risk 43

Severity

7.5

First published (updated )

CVE-2020-37134

UltraVNC UltraVNC LauncherUltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service

Risk 37

Severity

6.7

First published (updated )

CVE-2020-37132

UltraVNC RepeaterUltraVNC Repeater before 1300 does not restrict destination IP addresses or TCP ports, which allows …

Risk 43

Severity

7.5

First published (updated )

CVE-2016-5673

UltraVNC UltraVNCUntrusted search path vulnerability in UltraVNC 1.0.8.2 allows local users to gain privileges via a …

Risk 59

Severity

6.9

First published (updated )

CVE-2010-5248

UltraVNC UltraVNCMultiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remo…

Risk 87

Severity

First published (updated )

CVE-2009-0388

UltraVNC UltraVNCBuffer Overflow

Risk 79

Severity

9.3

First published (updated )

CVE-2008-5001

UltraVNC UltraVNCBuffer Overflow

Risk 79

Severity

9.3

First published (updated )

CVE-2008-0610

UltraVNC UltraVNCWeak Encryption

Risk 87

Severity

First published (updated )

CVE-2006-2206

UltraVNC Tabbed ViewerBuffer Overflow

Risk 78

Severity

First published (updated )

CVE-2006-1652

Trending

Vendor Risk Score

Software

UltraVNC UltraVNC RepeaterUltraVNC repeater HTTP server global buffer overflow via long URI (pre-auth RCE)

UltraVNC UltraVNC RepeaterUltraVNC repeater ships hardcoded default admin password allowing unauthenticated admin access

UltraVNC UltraVNC ViewerUltraVNC viewer heap buffer overflow via integer overflow in RFB connection-failure reason length

UltraVNC UltraVNC RepeaterUltraVNC repeater authenticated out-of-bounds write in rule parser via oversized token

UltraVNC UltraVNC RepeaterUltraVNC repeater integer overflow in win_log malloc leading to heap overflow

Don't miss critical vulnerabilities

UltraVNC UltraVNCUltraVNC vncauth.c uses time-seeded libc rand() to generate VNC authentication challenge bytes

UltraVNC UltraVNCUltraVNC vncWc2Mb calls wcslen() before validating that the wide string is NUL-terminated

UltraVNC RepeaterUltraVNC repeater wi_uudecode off-by-one in base64 decode boundary check

UltraVNC UltraVNCUltraVNC Service version.dll uncontrolled search path

UltraVNC UltraVNC LauncherUltraVNC Launcher 1.2.2.4 Denial of Service Buffer Overflow

Don't miss critical vulnerabilities

UltraVNC UltraVNC ViewerUltraVNC Viewer 1.2.2.4 Denial of Service via Buffer Overflow

UltraVNC UltraVNCUltraVNC Windows Service cryptbase.dll uncontrolled search path

UltraVNC UltraVNC LauncherUltraVNC Launcher 1.2.4.0 - 'RepeaterHost' Denial of Service

UltraVNC UltraVNC ViewerUltraVNC Viewer 1.2.4.0 - 'VNCServer' Denial of Service

UltraVNC UltraVNC LauncherUltraVNC Launcher 1.2.4.0 - 'Password' Denial of Service

Don't miss critical vulnerabilities

UltraVNC RepeaterUltraVNC Repeater before 1300 does not restrict destination IP addresses or TCP ports, which allows …

UltraVNC UltraVNCUntrusted search path vulnerability in UltraVNC 1.0.8.2 allows local users to gain privileges via a …

UltraVNC UltraVNCMultiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remo…

UltraVNC UltraVNCBuffer Overflow

UltraVNC UltraVNCBuffer Overflow

Don't miss critical vulnerabilities

UltraVNC UltraVNCWeak Encryption

UltraVNC Tabbed ViewerBuffer Overflow

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