A HIGH-severity vulnerability identified as CVE-2026-3169 has been published on February 25, 2026 with a CVSS base score of 8.8. The vulnerability affects Tenda F453 firmware. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-3169
Severity: HIGH
CVSS Score: 8.8
Published: February 25, 2026
Affected Product: Tenda F453 firmware
Weakness (CWE): CWE-119
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Confidentiality Impact | High |
| Integrity Impact | High |
| Availability Impact | High |
Technical Description
A security vulnerability has been detected in Tenda F453 1.0.0.3. This impacts the function fromSafeEmailFilter of the file /goform/SafeEmailFilter of the component httpd. The manipulation of the argument page leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.
Potential Impact
If exploited, this high-severity vulnerability could allow an attacker to compromise sensitive data confidentiality, tamper with system integrity, cause a denial of service. Organizations running Tenda F453 firmware should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
- Exploit, Third Party Advisory
- Permissions Required, VDB Entry
- Third Party Advisory, VDB Entry
- Third Party Advisory, VDB Entry
- Product
Related Security Advisories
- [HIGH] CVE-2025-40539 — CVSS 7.2 (February 24, 2026) — HIGH / CVSS 7.2
- [HIGH] CVE-2025-40540 — CVSS 7.2 (February 24, 2026) — HIGH / CVSS 7.2
- [HIGH] CVE-2025-40538 — CVSS 7.2 (February 24, 2026) — HIGH / CVSS 7.2
![[CRITICAL] CVE-2026-28773 — CVSS 9.3 (March 4, 2026)](https://atlas-cybersecurity.com/wp-content/plugins/elementor/assets/images/placeholder.png)
