High severity7.5NVD Advisory· Published Mar 5, 2019· Updated Jun 17, 2026
CVE-2019-8259
CVE-2019-8259
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6- cpe:2.3:a:siemens:sinumerik_access_mymachine\/p2p:*:*:*:*:*:*:*:*Range: <4.8
- cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\/ipc:*:*:*:*:*:*:*:*Range: <14.00
- cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\/ipc:*:*:*:*:*:*:*:*Range: <=12.01
Patches
Vulnerability mechanics
References
6- cert-portal.siemens.com/productcert/pdf/ssa-927095.pdfnvdThird Party Advisory
- ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-005-ultravnc-memory-leak/nvdThird Party Advisory
- www.us-cert.gov/ics/advisories/icsa-20-161-06nvdThird Party AdvisoryUS Government Resource
- cert-portal.siemens.com/productcert/pdf/ssa-286838.pdfnvd
- cert-portal.siemens.com/productcert/pdf/ssa-940818.pdfnvd
- us-cert.cisa.gov/ics/advisories/icsa-21-131-11nvd
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