High severity8.1NVD Advisory· Published Mar 24, 2026· Updated Jul 14, 2026
CVE-2026-32853
CVE-2026-32853
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
12cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*range: <0.9.15
- (no CPE)range: <=0.9.15
- (no CPE)range: 0
- osv-coords9 versionspkg:rpm/opensuse/LibVNCServer&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/LibVNCServer&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/LibVNCServer&distro=openSUSE%20Tumbleweedpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7
< 0.9.14-150600.3.6.1+ 8 more
- (no CPE)range: < 0.9.14-150600.3.6.1
- (no CPE)range: < 0.9.14-160000.4.1
- (no CPE)range: < 0.9.15-2.1
- (no CPE)range: < 0.9.14-150600.3.6.1
- (no CPE)range: < 0.9.9-17.44.1
- (no CPE)range: < 0.9.14-160000.4.1
- (no CPE)range: < 0.9.9-17.44.1
- (no CPE)range: < 0.9.14-160000.4.1
- (no CPE)range: < 0.9.14-150600.3.6.1
Patches
Vulnerability mechanics
References
3News mentions
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