CVE-2023-28999

Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure and add new files. This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.9 MEDIUM
PHYSICAL
LOW
HIGH
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
GitHub_MCNA
6.9 MEDIUM
PHYSICAL
LOW
HIGH
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 52%
VendorProductVersion
nextclouddesktop
3.0.0 ≤
𝑥
< 3.8.0
nextcloudnextcloud
3.0.5 ≤
𝑥
< 4.8.0
nextcloudnextcloud
3.13.0 ≤
𝑥
< 3.25.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
nextcloud-desktop
bullseye (security)
vulnerable
bullseye
no-dsa
bookworm
ignored
buster
no-dsa
trixie
3.15.0-1
fixed
sid
3.15.0-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
nextcloud-desktop
oracular
needs-triage
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
focal
needs-triage
bionic
dne
xenial
ignored
trusty
ignored