CVE-2020-8223

lowpriority · track · 27EPSS 0.015 · 74 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.47% (74th) EPSS

CVSS 3.5 · low

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–6.5

v2.03.5lowAV:N/AC:M/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USprimary

affected products (4)

Products and version ranges known to be affected.

n/a Nextcloud Server≤ Fixed in 19.0.1enisa_euvdEU
fedoraproject fedora= 32nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 33nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
nextcloud nextcloud server= 19.0.0nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-10-05modified 2026-06-17

related (6,660)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-102490US	high7.8OT critical	0.86% (58th)	KEV	2026-09-30
Zammad packages built with packager.io (DEB and RPM) could have allowed a local attacker who already had file system write privileges as the unprivileged zammad service account to…
CVE-2026-84869US	—OT critical	0.92% (60th)	KEV	2026-09-08
A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or Host confirmation in certain circum…
CVE-2026-46817US	—OT critical	12.3% (96th)	KEV	2026-05-28
Vulnerability in the Oracle Payments product of Oracle E-Business Suite (component: File Transmission). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable…
CVE-2026-21533US	—OT critical	4.18% (91st)	KEV	2026-02-10
Improper privilege management in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.
CVE-2024-57726US	critical9.9OT critical	66.4% (99th)	KEV	2025-01-15
SimpleHelp remote support software v5.5.7 and before has a vulnerability that allows low-privileges technicians to create API keys with excessive permissions. These API keys can be…

+6655 more

references (14)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan