CVE-2026-32853
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.
Vendor
Product
CWE
Yayın Tarihi
2026-03-24 18:16:09
Güncelleme
2026-03-25 20:48:30
Source Identifier
disclosure@vulncheck.com
KEV Date Added
-
Kategoriler
Referanslar
https://github.com/LibVNC/libvncserver/commit/009008e2f4d5a54dd71f422070df3af7b3dbc931
https://github.com/LibVNC/libvncserver/security/advisories/GHSA-87q7-v983-qwcj
https://www.vulncheck.com/advisories/libvncserver-ultrazip-encoding-heap-out-of-bounds-read
https://github.com/LibVNC/libvncserver/security/advisories/GHSA-87q7-v983-qwcj