CVE-2021-47943
📛 CVE Title
(no title)
Description
TextPattern CMS 4.8.7 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands by uploading malicious PHP files through the file upload functionality. Attackers can upload a PHP shell via the Files section in the content area and execute commands by accessing the uploaded file at /textpattern/files/ with GET parameters passed to the system function.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- high
- CVSS score
- 8.8 / 10
- CVSS vector
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Effective score
- 8.8 / 10 HIGH source: CNA overview
- CWE(s)
- —
- Reserved
- —
- Published
- —
- Last updated
- —
- Source
- https://www.tenable.com/cve/CVE-2021-47943
- Linked Threat
- CVE-2021-47943 — CVE-2021-47943
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-10 13:16:30 UTC
- NVD last modified
- 2026-05-12 14:24:15 UTC
- NVD CVSS v3.1
- 8.8 / 10 HIGH source: disclosure@vulncheck.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 2.8 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0027 (probability of exploitation in next 30 days)
- EPSS percentile
- 50.14% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24
NVD-assigned CWE(s):
CWE-434
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-05-24 23:58 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2021-34803 - Assigner
- VulnCheck
- Published
- May 10, 2026, 12:43:59 PM
- Updated
- May 11, 2026, 3:17:45 PM
- EUVD base score (CVSS 4.0)
-
8.7 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - EUVD-reported EPSS
- 0.2700
- Vendors
- Textpattern
- Products
-
Textpattern CMS (4.8.7)Textpattern CMS (4.8.7)
ENISA description: TextPattern CMS 4.8.7 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary commands by uploading malicious PHP files through the file upload functionality. Attackers can upload a PHP shell via the Files section in the content area and execute commands by accessing the uploaded file at /textpattern/files/ with GET parameters passed to the system function.
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (6)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://nvd.nist.gov/vuln/detail/CVE-2021-47943 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2021-47943 tenable:www.cve.org
- https://www.exploit-db.com/exploits/49996 tenable:www.exploit-db.com
- https://www.exploit-db.com/exploits/50415 tenable:www.exploit-db.com
- https://www.first.org/epss/ tenable:www.first.org
- https://www.vulncheck.com/advisories/textpattern-cms-remote-code-execution-via-file-upload tenable:www.vulncheck.com
NVD-tagged references (3)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://www.exploit-db.com/exploits/49996 disclosure@vulncheck.com
- https://www.exploit-db.com/exploits/50415 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/textpattern-cms-remote-code-execution-via-file-upload disclosure@vulncheck.com
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:attack.mitre.org
This mitigation can be implemented through the following measures: Regular Operating System Updates Implementation: Apply the latest Windows security updates monthly using WSUS (Windows Server Update Services) or a similar patch management solution. Configure systems to check for updates automatically and schedule reboots during maintenance ...
2026-05-26 02:51 UTC -
web:blog.qualys.com
Key Takeaways RedSun is a critical zero-day vulnerability in Microsoft Defender that allows low-privileged users to gain SYSTEM access No patch is currently available, leaving all Defender-enabled Windows systems potentially exposed Qualys VMDR detects affected assets instantly (QID 92382) TruRisk™ Eliminate enables immediate mitigation , removing exploitability without waiting for a fix ...
2026-05-26 02:51 UTC -
web:cheatsheetseries.owasp.org
Virtual Patching Cheat Sheet Introduction The goal with this cheat Sheet is to present a concise virtual patching framework that organizations can follow to maximize the timely implementation of mitigation protections. Definition: Virtual Patching A security policy enforcement layer which prevents and reports the exploitation attempt of a known vulnerability. The virtual patch works when the ...
2026-05-26 02:51 UTC -
web:docs.oracle.com
Patch Management for Oracle Databases allows you to remediate the vulnerabilities identified through Vulnerability Detection, by using recommended security patches or the CVE ID for your fleet of databases. Using Patch Management, you can: Prioritize critical system remediation based on vulnerability severity, database version, or compliance status, using Gold Image-based out-of-place patching ...
2026-05-26 02:51 UTC -
web:securityboulevard.com
Cybersecurity vulnerabilities pose significant risks to organizations in today's digital landscape. Left unaddressed, these vulnerabilities can lead to data breaches, financial losses, and reputational damage. Organizations must decide how to tackle vulnerabilities—through remediation , mitigation , or a combination of both. But which strategy is more effective? This blog explores the ...
2026-05-26 02:51 UTC -
web:www.bastazo.com
In the field of vulnerability management, remediation , workaround, and mitigation are three common terms used to describe methods of addressing a vulnerability. They are sometimes used interchangeably, but their meanings can vary slightly across different vendors and organizations.
2026-05-26 02:51 UTC -
web:www.bugcrowd.com
Vulnerability mitigation is typically considered a temporary or interim solution. While mitigation measures can reduce the immediate risk associated with vulnerabilities, they may not provide a permanent fix . Organizations should aim to prioritize and plan for complete vulnerability remediation whenever feasible and allocate resources accordingly.
2026-05-26 02:51 UTC -
web:www.emagined.com
Discover the difference between mitigation and remediation in vulnerability management. Learn best practices for Pentest remediation and effective cyber protection.
2026-05-26 02:51 UTC -
web:www.microsoft.com
Security Update Guide Notifications Microsoft's free Security Update Guide Notifications provide links to security-related software updates and notification of re-released security updates. These notifications are sent via email throughout the month as needed.
2026-05-26 02:51 UTC -
web:www.secure.com
Learn the difference between vulnerability remediation and mitigation , and how a risk-based strategy can strengthen your security posture.
2026-05-26 02:51 UTC
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