Home/CVE/Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless serv
CVE

CVE-2022-39334

Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless serv

Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or credentials to a network attacker. This affects the CLI only.

It does not affect the standard GUI desktop Nextcloud clients, and it does not affect the Nextcloud server.

LOW · CVSS 3.9 EPSS 0.00065
Schedule remediation
  • Public exploit or PoC is available
Sigma rules6 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
CWE-295Improper Certificate Validation
▤

Affected Products & Versions

1
nextcloud desktop< 3.6.1
⚠

Public Exploits & PoCs

1
pocgithub.com · 4927github.com
◈

Sigma Hunt Rules

6
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighUser Added to Remote Desktop Users Group
producthighNgrok Usage with Remote Desktop Service
productmediumInstallation of TeamViewer Desktop
productmediumDesktop.INI Created by Uncommon Process
productmediumPotential Remote Desktop Tunneling
productmediumNew Remote Desktop Connection Initiated Via Mstsc.EXE
▣

Scoring & Timeline

3.9
LOW · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD25 Nov 2022 · 07:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
suse-csafopenSUSE-SU-2023:0171-1
suse-csafopenSUSE-SU-2023:0090-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/nextcloud/desktop/pull/5022PatchThird Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-82xx-98xv-4jxvThird Party Advisory
https://hackerone.com/reports/1699740Permissions RequiredThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin