CVE Tools
Sign in

CVE-2019-8268

Published: Mar 9, 2019Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-193
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
3.9%
Top 11.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

UltraVNC revision 1206 has multiple off-by-one vulnerabilities in VNC client code connected with improper usage of ClientConnection::ReadString function, which can potentially result code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1207.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-193

Affected Products

ultravncuvnc
sinumerik access mymachine\/p2psiemens
On-prem
Enterprise Software / collaboration-groupware
sinumerik pcu base win10 software\/ipcsiemens
On-prem
Enterprise Software / collaboration-groupware
sinumerik pcu base win7 software\/ipcsiemens
On-prem
Enterprise Software / collaboration-groupware
UltraVNCTeam UltraVNC
On-prem
Consumer Software / productivity
uvncaka ultravnc, pchelpwarev2, ultravnc launcher, winvnc
siemenscommercialDEEnterprise Softwareaka siemens ag
team ultravncoss-projectConsumer Softwareaka ultravnc
and 2 more affected products View all →

Exploitability

Official Patch Available

References

https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
cert-portal.siemens.com
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-015-ultravnc-off-by-one-error/
ics-cert.kaspersky.com
https://www.us-cert.gov/ics/advisories/icsa-20-161-06
us-cert.gov
and 12 more references View all →

Timeline

Published
Mar 9, 2019
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2019-8268 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows