CVE-2019-8264
CRITICALUltraVNC < 1.2.2.3 - Out-of-bounds Read in Ultra2 Decoder
Title source: llmDescription
UltraVNC revision 1203 has out-of-bounds access vulnerability in VNC client inside Ultra2 decoder, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1204.
References (6)
Core 6
Core References
Third Party Advisory x_refsource_misc
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-011-ultravnc-access-of-memory-location-after-end-of-buffer/
Vendor Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
Various Sources x_refsource_misc
https://www.us-cert.gov/ics/advisories/icsa-20-161-06
Vendor Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
Vendor Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
Third Party Advisory, US Government Resource x_refsource_misc
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
Scores
CVSS v3
9.8
EPSS
0.0313
EPSS Percentile
86.1%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-125
CWE-787
CWE-788
Status
published
Products (1)
uvnc/ultravnc
< 1.2.2.3
Published
Mar 08, 2019
Tracked Since
Feb 18, 2026