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Vulnerability details: VCID-z1m2-xav4-hbgg
Vulnerability ID VCID-z1m2-xav4-hbgg
Aliases CVE-2020-14396
Summary An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-476 NULL Pointer Dereference
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14396.json
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
epss 0.01068 https://api.first.org/data/v1/epss?cve=CVE-2020-14396
cvssv3.1 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-14396
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-14396
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14396.json
https://api.first.org/data/v1/epss?cve=CVE-2020-14396
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14396
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/LibVNC/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553
https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
1860340 https://bugzilla.redhat.com/show_bug.cgi?id=1860340
cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2020-14396 https://nvd.nist.gov/vuln/detail/CVE-2020-14396
USN-4434-1 https://usn.ubuntu.com/4434-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14396.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-14396
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-14396
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.76795
EPSS Score 0.01068
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:43:03.367717+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4434-1/ 37.0.0