CVE Tools
Sign in

CVE-2020-27304

Published: Oct 21, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-23
9.8CRITICAL
NVD MITRE
EPSS Score
3.1%
Top 13.7%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows, when using the built-in HTTP form-based file upload mechanism, via the mg_handle_form_request API. Web applications that use the file upload form handler, and use parts of the user-controlled filename in the output path, are susceptible to directory traversal

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-23CWE-22

Affected Products

Siemens AG
commercial·DEaka siemens
sinec infrastructure network services
ICS / OT / IoT
SINEC INS
ICS / OT / IoT
SCALANCE LPE9403
ICS / OT / IoT
civetweb project
oss-project
civetwebLibrary
OSS Libraries / web-framework
Сообщество свободного программного обеспечения
oss-projectaka fsf
CivetWebOn-prem
Web & CMS Plugins / cms-core
civetweb_project
oss-projectaka civetweb
civetwebLibrary
OSS Libraries / web-framework

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Is your org exposed to CVE-2020-27304?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
cert-portal.siemens.com
https://groups.google.com/g/civetweb/c/yPBxNXdGgJQ
groups.google.com
and 87 more references View all →
News mentions
Could not load news mentions.

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-27304 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows