CVE-2026-5021
8.8 · HIGHOverview
CVE-2026-5021 is a high-severity vulnerability affecting tenda f453_firmware. It was published on March 29, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
A flaw has been found in Tenda F453 1.0.0.3. This affects the function fromPPTPUserSetting of the file /goform/PPTPUserSetting of the component httpd. This manipulation of the argument delno causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.
Remediation
Check the references section for vendor advisories and patches from tenda. Update f453_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2026-5021?
CVE-2026-5021 is a high-severity vulnerability affecting tenda f453_firmware. It was published on March 29, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-5021?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-5021?
Check the references section for vendor advisories and patches from tenda. Update f453_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-5021?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-5021 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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