VULNERABILITY INTELLIGENCE

CVE-2019-8259

CVSS score7.5 HIGH
EPSS probability3.01%
CISA KEVNot currently listed
Published2019-03-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • CWE-401: Missing Release of Memory after Effective Lifetime
  • CWE-665: Improper Initialization

Primary references