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CVE-2020-14401

18
FAUCET Score

CVE-2020-14401 is an integer overflow vulnerability in LibVNCServer versions prior to 0.9.13, specifically within the libvncserver/scale.c component, affecting products like Debian, openSUSE, and Siemens. This medium-severity vulnerability (CVSS 6.5) can be exploited remotely with low attack complexity, potentially leading to limited integrity and availability impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.13CPE matchmatch criteria
cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
15.2CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.45%
Probability of exploitation in next 30 days
EPSS Percentile
82.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0245 is in the 74th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libvncserver
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libvncserver

Vendor Advisories (1)

redhatCVE-2020-14401Low

libvncserver: libvncserver/scale.c has a pixel_value integer overflow

Jun 17, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-07/msg00033.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2020-07/msg00055.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2020-07/msg00066.html
Mailing ListThird Party Advisory
cert-portal.siemens.com / productcert/pdf/ssa-390195.pdf
PatchThird Party Advisory
github.com / LibVNC/libvncserver/commit/a6788d1da719ae006605b78d22f5a9f170b423af
PatchThird Party Advisory
github.com / LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
Release NotesThird Party Advisory
lists.debian.org / debian-lts-announce/2020/06/msg00035.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2020/08/msg00045.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 4434-1
Third Party Advisory