CVE-2026-107612 GlavSoft TightVNC Server - Broken Access Control

GlavSoft TightVNC Server for Windows < 2.8.88 contains an incorrect permission assignment caused by a NULL DACL on a named shared memory segment with predictable name, letting local authenticated users read or overwrite IPC handles, exploit requires local authentication.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.10% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure, Privilege Escalation, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
8 October 2026
Updated
15 October 2026
Weakness
CWE-338

Vendor fix

Update to version 2.8.88 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs