CVE-2019-8260

UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC client RRE decoder code, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200.

• CWE-125
• CWE-125

• 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-19-006-ultravnc-out-of-bound-read/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-19-006-ultravnc-out-of-bound-read/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 5, 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.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2019-8254Adobe Photoshop CC versions before 20.0.8 and 21.0.x before …7.8
• CVE-2019-8255Brackets versions 1.14 and earlier have a command injection …9.8
• CVE-2019-8256ColdFusion versions Update 6 and earlier have an insecure in…9.8
• CVE-2019-8257Adobe Acrobat and Reader versions 2019.012.20035 and earlier…9.8
• CVE-2019-8258UltraVNC revision 1198 has a heap buffer overflow vulnerabil…9.8
• CVE-2019-8259UltraVNC revision 1198 contains multiple memory leaks (CWE-6…7.5
• CVE-2019-8261UltraVNC revision 1199 has a out-of-bounds read vulnerabilit…
• 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-2019-8265UltraVNC revision 1207 has multiple out-of-bounds access vul…
• CVE-2019-8266UltraVNC revision 1207 has multiple out-of-bounds access vul…