CVE-2019-8268

moderate-risk
Published 2019-03-08

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.

Do I need to act?

~
1.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (4)

Sinumerik Access Mymachine\/P2P
Sinumerik Pcu Base Win10 Software\/Ipc
Sinumerik Pcu Base Win7 Software\/Ipc

Affected Vendors

Siemens Uvnc

References (6)

Third Party Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
Third Party Advisory https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19...
Third Party Advisory https://www.us-cert.gov/ics/advisories/icsa-20-161-06
Third Party Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
Third Party Advisory https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19...
Third Party Advisory https://www.us-cert.gov/ics/advisories/icsa-20-161-06
46
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 4/34 · Minimal
Exposure 10/34 · Low