CVE-2019-8258

Severity CVSS v4.0:

Pending analysis

Type:

CWE-122 Heap-based Buffer Overflow

Publication date:

05/03/2019

Last modified:

17/06/2026

Description

UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

7.50

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:uvnc:ultravnc::::::::		1.2.2.3 (excluding)
cpe:2.3:a:siemens:sinumerik_access_mymachine\/p2p::::::::		4.8 (excluding)
cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\/ipc::::::::		14.00 (excluding)
cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\/ipc::::::::		12.01 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2019-8258

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools