CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NCVE-2019-8259
High (7.5). EPSS 3.0% chance of exploitation in the next 30 days.
UltraVNC revision 1198 contains multiple memory leaks (CWE-655) in VNC client code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1199.
Severity
- EPSS
- 3.0% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-401, CWE-665
- 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-19-005-ultravnc-memory-leak/
- https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11