VULNERABILITY INTELLIGENCE

CVE-2026-32853

CVSS score8.1 HIGH
EPSS probability0.45%
CISA KEVNot currently listed
Published2026-03-24
Last modified2026-07-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Description

LibVNCServer versions 0.9.15 and prior (fixed in commit 009008e) contain a heap out-of-bounds read vulnerability in the UltraZip encoding handler that allows a malicious VNC server to cause information disclosure or application crash. Attackers can exploit improper bounds checking in the HandleUltraZipBPP() function by manipulating subrectangle header counts to read beyond the allocated heap buffer.

Weakness classification

  • disclosure@vulncheck.com: CWE-125

Primary references