VULNERABILITY INTELLIGENCE
CVE-2016-9942
CVSS score9.8 CRITICAL
EPSS probability3.82%
CISA KEVNot currently listed
Published2016-12-31
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.
Weakness classification
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer