CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2019-8262
Critical (9.8). EPSS 4.8% chance of exploitation in the next 30 days.
UltraVNC revision 1203 has multiple heap buffer overflow vulnerabilities in VNC client code inside Ultra decoder, which results in code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1204.
Severity
- EPSS
- 4.8% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-787, CWE-122
- Published
- Modified
- Record from
- the NVD, synced
Affected
- siemens:sinumerik_access_mymachine\/p2p
- siemens:sinumerik_pcu_base_win10_software\/ipc
- siemens:sinumerik_pcu_base_win7_software\/ipc
- uvnc:ultravnc
References
- 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-19-008-ultravnc-heap-based-buffer-overflow/
- https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11