CVE-2019-8265

UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connected with improper usage of SETPIXELS macro in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1208.

• CWE-788
• CWE-125
• CWE-787

• https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-012-ultravnc-access-of-memory-location-after-end-of-buffer/Third Party Advisory
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06
• https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-012-ultravnc-access-of-memory-location-after-end-of-buffer/Third Party Advisory
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06

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.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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• CVE-2019-8262UltraVNC revision 1203 has multiple heap buffer overflow vul…9.8
• CVE-2019-8263UltraVNC revision 1205 has stack-based buffer overflow vulne…6.5
• CVE-2019-8264UltraVNC revision 1203 has out-of-bounds access vulnerabilit…
• CVE-2019-8266UltraVNC revision 1207 has multiple out-of-bounds access vul…
• CVE-2019-8267UltraVNC revision 1207 has out-of-bounds read vulnerability …
• CVE-2019-8268UltraVNC revision 1206 has multiple off-by-one vulnerabiliti…9.8
• CVE-2019-8269UltraVNC revision 1206 has stack-based Buffer overflow vulne…7.5
• CVE-2019-8270UltraVNC revision 1210 has out-of-bounds read vulnerability …
• CVE-2019-8271UltraVNC revision 1211 has a heap buffer overflow vulnerabil…9.8