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CVE-2019-8266

Published: Mar 9, 2019Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-788
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
2.8%
Top 15.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connected with improper usage of ClientConnection::Copybuffer function in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. User interaction is required to trigger these vulnerabilities. These vulnerabilities have been fixed in revision 1208.

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-788CWE-125CWE-787

Affected Products

ultravncuvnc
UltraVNCTeam UltraVNC
On-prem
Consumer Software / productivity
TelevisGoSchneider ElectricICS / OT / IoT
UltraVNCKaspersky Lab
Mixed
Security Products / endpoint-av-edr
uvncaka ultravnc, pchelpwarev2, ultravnc launcher, winvnc
team ultravncoss-projectConsumer Softwareaka ultravnc
schneider electriccommercialFRICS / OT / IoTaka schneider-electric
kaspersky labcommercialRUSecurity Productsaka kaspersky anti-virus, ultravnc, kaspersky internet security

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Collection
Initial Access
Privilege Escalation
View detailed technique mapping

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-19-013-ultravnc-access-of-memory-location-after-end-of-buffer/
ics-cert.kaspersky.com
https://www.us-cert.gov/ics/advisories/icsa-20-161-06
us-cert.gov
and 11 more references View all →

Timeline

Published
Mar 9, 2019
Last Updated
Nov 21, 2024

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