Critical severity · published Feb 24, 2023
CVE-2021-33224
File upload vulnerability in Umbraco Forms v.8.7.0 allows unauthenticated attackers to execute arbitrary code via a crafted web.config and asp file
9.8
CVSS
0.7%
EPSS
No
On KEV
Description
File upload vulnerability in Umbraco Forms v.8.7.0 allows unauthenticated attackers to execute arbitrary code via a crafted web.config and asp file.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UF
Umbraco Forms · Umbraco
8.7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33224
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33224
Release Notes
https://our.umbraco.com/packages/developer-tools/umbraco-forms
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