CVE-2016-9941

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Summary

CVECVE-2016-9941
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-12-31 18:59:00 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionHeap-based buffer overflow in rfbproto.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 containing a subrectangle outside of the client drawing area.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.008360000 probability, percentile 0.747480000 (date 2026-05-11)

Problem Types: CWE-119 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Libvncserver Project Libvncserver All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Release LibVNCServer-0.9.11 · LibVNC/libvncserver · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com
LibVNCServer Multiple Heap Based Buffer Overflow Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Fix two heap buffer overflows by atalax · Pull Request #137 · LibVNC/libvncserver · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com
[SECURITY] [DLA 1979-1] italc security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
LibVNCServer/LibVNCClient: Multiple vulnerabilities (GLSA 201702-24) — Gentoo Security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
USN-4587-1: iTALC vulnerabilities | Ubuntu security notices | Ubuntu af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
Debian -- Security Information -- DSA-3753-1 libvncserver af854a3a-2127-422b-91ae-364da2661108 www.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 501065 Alpine Linux Security Update for libvncserver
  • 505048 Alpine Linux Security Update for libvncserver
  • 710475 Gentoo Linux LibVNCServer/LibVNCClient Multiple Vulnerabilities (GLSA 201702-24)

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