Catalogue CVE

CVE-2020-14399

libvncserver affected and fixed versions

An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed.

Gravité: Medium · CVSS 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Published: Jun 17, 2020, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.80% · Oct 27, 2026

Projects and upstream resources

[libvncserver][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiantrixie	libvncserver	`0.9.13+dfsg-1`	FixedDistribution-reported fixed boundary	[CVE-2020-14399]
Debiantrixie	libvncserver	`0.9.15+dfsg-1+deb13u2`	Fixed	[CVE-2020-14399]
Debiansid	libvncserver	`0.9.13+dfsg-1`	FixedDistribution-reported fixed boundary	[CVE-2020-14399]
Debiansid	libvncserver	`0.9.15+dfsg-6`	Fixed	[CVE-2020-14399]
Debianforky	libvncserver	`0.9.13+dfsg-1`	FixedDistribution-reported fixed boundary	[CVE-2020-14399]
Debianforky	libvncserver	`0.9.15+dfsg-6`	Fixed	[CVE-2020-14399]
Debianbookworm	libvncserver	`0.9.13+dfsg-1`	FixedDistribution-reported fixed boundary	[CVE-2020-14399]
Debianbookworm	libvncserver	`0.9.14+dfsg-1+deb12u2`	Fixed	[CVE-2020-14399]

Showing 8 fix observations. All 29 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
UnknownRelease not reported	libvncserver	`0.9.13+dfsg-1`	UnknownSource applicability is not established	Provider not reported
Debianbookworm	libvncserver	`0.9.13+dfsg-1`	FixedDistribution-reported fixed boundary	[CVE-2020-14399]
Debianbookworm	libvncserver	`0.9.14+dfsg-1+deb12u2`	Fixed	[CVE-2020-14399]
Debianforky	libvncserver	`0.9.13+dfsg-1`	FixedDistribution-reported fixed boundary	[CVE-2020-14399]
Debianforky	libvncserver	`0.9.15+dfsg-6`	Fixed	[CVE-2020-14399]
Debiansid	libvncserver	`0.9.13+dfsg-1`	FixedDistribution-reported fixed boundary	[CVE-2020-14399]
Debiansid	libvncserver	`0.9.15+dfsg-6`	Fixed	[CVE-2020-14399]
Debiantrixie	libvncserver	`0.9.13+dfsg-1`	FixedDistribution-reported fixed boundary	[CVE-2020-14399]
Debiantrixie	libvncserver	`0.9.15+dfsg-1+deb13u2`	Fixed	[CVE-2020-14399]
Ubuntu16.04	libvncserver	`0.9.10+dfsg-3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu16.04	libvncserver	`0.9.10+dfsg-3build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu16.04	libvncserver	`0.9.10+dfsg-3ubuntu0.16.04.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu16.04	libvncserver	`0.9.10+dfsg-3ubuntu0.16.04.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu16.04	libvncserver	`0.9.10+dfsg-3ubuntu0.16.04.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu16.04	libvncserver	`0.9.10+dfsg-3ubuntu0.16.04.4`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu16.04	libvncserver	`0.9.10+dfsg-3ubuntu0.16.04.5`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu18.04	libvncserver	`0.9.11+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu18.04	libvncserver	`0.9.11+dfsg-1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu18.04	libvncserver	`0.9.11+dfsg-1ubuntu1.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu18.04	libvncserver	`0.9.11+dfsg-1ubuntu1.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu18.04	libvncserver	`0.9.11+dfsg-1ubuntu1.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu20.04	libvncserver	`0.9.11+dfsg-1.3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu20.04	libvncserver	`0.9.12+dfsg-3ubuntu3`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu20.04	libvncserver	`0.9.12+dfsg-6`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu20.04	libvncserver	`0.9.12+dfsg-7`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu20.04	libvncserver	`0.9.12+dfsg-8`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu20.04	libvncserver	`0.9.12+dfsg-9`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu20.04	libvncserver	`0.9.12+dfsg-9ubuntu0.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC
Ubuntu20.04	libvncserver	`0.9.12+dfsg-9ubuntu0.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-14399]Apr 22, 2026, 12:29:48 PM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "libvncserver",
      "status": "fixed",
      "release": "sid",
      "version": "0.9.15+dfsg-6"
    },
    {
      "name": "libvncserver",
      "status": "fixed",
      "release": "forky",
      "version": "0.9.15+dfsg-6"
    },
    {
      "name": "libvncserver",
      "status": "fixed",
      "release": "trixie",
      "version": "0.9.15+dfsg-1+deb13u2"
    },
    {
      "name": "libvncserver",
      "status": "fixed",
      "release": "bookworm",
      "version": "0.9.14+dfsg-1+deb12u2"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "libvncserver",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "0.9.13+dfsg-1"
    },
    {
      "bug": null,
      "name": "libvncserver",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "0.9.13+dfsg-1"
    },
    {
      "bug": null,
      "name": "libvncserver",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "0.9.13+dfsg-1"
    },
    {
      "bug": null,
      "name": "libvncserver",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "0.9.13+dfsg-1"
    }
  ],
  "distribution_packages": [
    {
      "name": "libvncserver",
      "fixed_version": "0.9.13+dfsg-1",
      "applicability_unknown": true
    },
    {
      "name": "libvncserver",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.10+dfsg-3ubuntu0.16.04.5"
            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "0.9.10+dfsg-3",
        "0.9.10+dfsg-3build1",
        "0.9.10+dfsg-3ubuntu0.16.04.1",
        "0.9.10+dfsg-3ubuntu0.16.04.2",
        "0.9.10+dfsg-3ubuntu0.16.04.3",
        "0.9.10+dfsg-3ubuntu0.16.04.4"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-14399",
      "fixed_version": "0.9.10+dfsg-3ubuntu0.16.04.5",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-14399",
      "provider_updated_at": "2026-04-22T12:29:48.163609Z",
      "applicability_unknown": true
    },
    {
      "name": "libvncserver",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.11+dfsg-1ubuntu1.3"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "0.9.11+dfsg-1",
        "0.9.11+dfsg-1ubuntu1",
        "0.9.11+dfsg-1ubuntu1.1",
        "0.9.11+dfsg-1ubuntu1.2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-14399",
      "fixed_version": "0.9.11+dfsg-1ubuntu1.3",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-14399",
      "provider_updated_at": "2026-04-22T12:29:48.163609Z",
      "applicability_unknown": true
    },
    {
      "name": "libvncserver",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.12+dfsg-9ubuntu0.2"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "0.9.11+dfsg-1.3",
        "0.9.12+dfsg-3ubuntu3",
        "0.9.12+dfsg-6",
        "0.9.12+dfsg-7",
        "0.9.12+dfsg-8",
        "0.9.12+dfsg-9",
        "0.9.12+dfsg-9ubuntu0.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-14399",
      "fixed_version": "0.9.12+dfsg-9ubuntu0.2",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-14399",
      "provider_updated_at": "2026-04-22T12:29:48.163609Z",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

L’association des paquets est en cours.

[Debian 12 (Bookworm)]

[libvncclient1]Inconnu
Paquet source: [libvncserver]
Détails (2)
- 0.9.14+dfsg-1+deb12u2 · amd64 · bookworm
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
- 0.9.14+dfsg-1+deb12u2 · arm64 · bookworm
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
[libvncserver1]Inconnu
Paquet source: [libvncserver]
Détails (2)
- 0.9.14+dfsg-1+deb12u2 · amd64 · bookworm
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
- 0.9.14+dfsg-1+deb12u2 · arm64 · bookworm
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
[libvncserver-dev]Inconnu
Paquet source: [libvncserver]
Détails (2)
- 0.9.14+dfsg-1+deb12u2 · amd64 · bookworm
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
- 0.9.14+dfsg-1+deb12u2 · arm64 · bookworm
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12

[Debian 13 (Trixie)]

[libvncclient1]Inconnu
Paquet source: [libvncserver]
Détails (2)
- 0.9.15+dfsg-1+deb13u2 · amd64 · trixie
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · 13
- 0.9.15+dfsg-1+deb13u2 · arm64 · trixie
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · 13
[libvncserver1]Inconnu
Paquet source: [libvncserver]
Détails (2)
- 0.9.15+dfsg-1+deb13u2 · amd64 · trixie
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · 13
- 0.9.15+dfsg-1+deb13u2 · arm64 · trixie
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · 13
[libvncserver-dev]Inconnu
Paquet source: [libvncserver]
Détails (2)
- 0.9.15+dfsg-1+deb13u2 · amd64 · trixie
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · 13
- 0.9.15+dfsg-1+deb13u2 · arm64 · trixie
  Corrigée · Corrigée: 0.9.13+dfsg-1
  dsa · libvncserver · debian · 13

Observé: Oct 23, 2026, 5:48:03 PM UTC

Références

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]