CVE-2019-8273

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

• CWE-122
• CWE-787

• https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdfThird Party Advisory
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-020-ultravnc-heap-based-buffer-overflow/Third Party Advisory
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06Third Party Advisory, US Government Resource
• https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdfThird Party Advisory
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-020-ultravnc-heap-based-buffer-overflow/Third Party Advisory
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06Third Party Advisory, US Government Resource

Published

Mar 8, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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