HOMEVULNERABILITIESCVE-2021-42015
MEDIUM

CVE-2021-42015

CWE-525Published: November 9, 2021· Updated: Jun 17, 2026

5.5
CVSS v3.1

Official Description

A vulnerability has been identified in Mendix Applications using Mendix 7 (All versions < V7.23.26), Mendix Applications using Mendix 8 (All versions < V8.18.12), Mendix Applications using Mendix 9 (All versions < V9.6.1). Applications built with affected versions of Mendix Studio Pro do not prevent file documents from being cached when files are opened or downloaded using a browser. This could allow a local attacker to read those documents by exploring the browser cache.

NVD Source

Technical Analysis

CVE-2021-42015 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

mendix1 product(s)
mendix
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-338732.pdf
PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-338732.pdf

All References (2)

→
https://cert-portal.siemens.com/productcert/pdf/ssa-338732.pdfPatch · Third Party Advisory
→
https://cert-portal.siemens.com/productcert/pdf/ssa-338732.pdfPatch · Third Party Advisory

Quick Facts

CVE IDCVE-2021-42015
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-525
CISA KEVNo
Affected1 vendor(s)
PublishedNov 9, 2021

Related CVEs (CWE-525)

CVE-2025-48947
7.7
CVE-2024-30130
7.5
CVE-2025-52625
7.5
CVE-2024-31906
6.2
CVE-2025-15554
6.0
CVE-2026-41918
5.7

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-42015 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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