// For flags

CVE-2021-26642

XpressEngine file upload vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

When uploading an image file to a bulletin board developed with XpressEngine, a vulnerability in which an arbitrary file can be uploaded due to insufficient verification of the file. A remote attacker can use this vulnerability to execute arbitrary code on the server where the bulletin board is running.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-02-03 CVE Reserved
  • 2023-01-20 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-01-04 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-434: Unrestricted Upload of File with Dangerous Type
CAPEC
References (1)
URL Tag Source
https://boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=67125 Third Party Advisory
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Xpressengine
Search vendor "Xpressengine"
 Xpressengine
Search vendor "Xpressengine" for product "Xpressengine"
 < 3.0.14
Search vendor "Xpressengine" for product "Xpressengine" and version " < 3.0.14"
-
Affected
in Microsoft
Search vendor "Microsoft"
 Windows
Search vendor "Microsoft" for product "Windows"
--
Safe