CVE-2019-8271

moderate-risk
Published 2019-03-08

UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer handler, which can potentially result code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.

Do I need to act?

~
4.0% 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
49
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 7/34 · Low
Exposure 10/34 · Low