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Libvnc Project LibvncserverNull Pointer Dereference

Risk 45
Severity
7.5
Null Pointer Dereference
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tlsopenssl.c has a NULL pointer dereference.

1 / 2
Source: Launchpad
First published (updated )
CVE-2020-14396

redhat/libvncserverNull Pointer Dereference

Risk 45
Severity
7.5
Null Pointer Dereference
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.

1 / 3
Source: Launchpad
First published (updated )
CVE-2020-14397

Libvnc Project LibvncserverLast updated 11 July 2025

Risk 45
Severity
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

An issue was discovered in LibVNCServer before 0.9.13. An improperly closed TCP connection causes an infinite loop in libvncclient/sockets.c.

1 / 2
Source: Launchpad
First published (updated )
CVE-2020-14398

Libvnc Project LibvncserverLast updated 11 July 2025

Risk 35
Severity
5.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/corre.c allows out-of-bounds access via encodings.

1 / 2
Source: Launchpad
First published (updated )
CVE-2020-14402

Libvnc Project LibvncserverLast updated 11 July 2025

Risk 35
Severity
5.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/hextile.c allows out-of-bounds access via encodings.

1 / 2
Source: Launchpad
First published (updated )
CVE-2020-14403
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Libvnc Project LibvncserverLast updated 11 July 2025

Risk 35
Severity
5.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rre.c allows out-of-bounds access via encodings.

1 / 2
Source: Launchpad
First published (updated )
CVE-2020-14404

redhat/libvncserverLast updated 11 July 2025

Risk 40
Severity
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.

1 / 3
Source: Launchpad
First published (updated )
CVE-2020-14405

Libvnc Project LibvncserverBuffer Overflow

Risk 45
Severity
7.5
Buffer Overflow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Last updated 24 July 2024

1 / 3
Source: Ubuntu
First published (updated )
CVE-2019-20839

Libvnc Project LibvncserverLast updated 24 July 2024

Risk 45
Severity
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/wsdecode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.

1 / 2
First published (updated )
CVE-2019-20840

Libvnc Project LibvncserverAn issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialize…

Risk 43
Severity
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

An issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialized memory contents) in the libvncclient/rfbproto.c ConnectToRFBRepeater function.

1 / 2
Source: MITRE
First published (updated )
CVE-2018-21247
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Libvnc Project LibvncserverGHSL-2020-064: integer overflow in LibVNCClient HandleCursorShape resulting in remote heap overflow - CVE-2019-20788

Risk 88
Severity
9.8
Integer Overflow, Buffer Overflow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 18 August 2025

1 / 3
Source: Ubuntu
First published (updated )
CVE-2019-20788

Libvnc Project LibvncserverLast updated 11 July 2025

Risk 45
Severity
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Last updated 11 July 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2019-15681

Libvnc Project LibvncserverLast updated 25 August 2025

Risk 88
Severity
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 25 August 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20749

Libvnc Project LibvncserverLast updated 25 August 2025

Risk 88
Severity
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 25 August 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20750

Libvnc Project LibvncserverLast updated 11 July 2025

Risk 88
Severity
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 11 July 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20748
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Libvnc Project LibvncserverNull Pointer Dereference

Risk 45
Severity
7.5
Null Pointer Dereference
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Last updated 18 August 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20024

Libvnc Project LibvncserverLast updated 25 August 2025

Risk 88
Severity
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 25 August 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20019

Libvnc Project LibvncserverLast updated 11 July 2025

Risk 88
Severity
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 11 July 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20020

Libvnc Project LibvncserverLast updated 24 July 2024

Risk 89
Severity
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 24 July 2024

1 / 3
Source: Ubuntu
First published (updated )
CVE-2018-15127

Libvnc Project LibvncserverLast updated 11 July 2025

Risk 45
Severity
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Last updated 11 July 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20022
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Libvnc Project LibvncserverLast updated 11 July 2025

Risk 46
Severity
7.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Last updated 11 July 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20021

Libvnc Project LibvncserverLast updated 25 August 2025

Risk 45
Severity
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Last updated 25 August 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-20023

Libvnc Project LibvncserverUse After Free

Risk 88
Severity
9.8
Use After Free
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 24 July 2024

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-15126

Libvnc Project LibvncserverUse After Free

Risk 77
Severity
8.1
Use After Free
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Last updated 25 August 2025

1 / 2
Source: Ubuntu
First published (updated )
CVE-2018-6307

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