CVE-2026-7032
Published: 26 April 2026
Summary
CVE-2026-7032 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda F456 Firmware. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 45.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2026-7032 is a buffer overflow vulnerability in the Tenda F456 router running firmware version 1.0.0.5. The flaw resides in the SafeEmailFilter function within the /goform/SafeEmailFilter endpoint, triggered by manipulating the 'page' argument. This issue, classified under CWE-119 and CWE-120, has a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its potential for remote exploitation.
Attackers with low privileges, such as authenticated users on the network, can exploit this vulnerability remotely without user interaction. Successful exploitation allows arbitrary code execution, leading to high impacts on confidentiality, integrity, and availability, potentially enabling full device compromise, data theft, or further network pivoting.
Advisories from VulDB detail the vulnerability and note that an exploit has been published on GitHub, including a README in a repository focused on Tenda F456 issues. The vendor's site (tenda.com.cn) is referenced, but no specific patches or mitigation guidance are outlined in the provided sources; practitioners should monitor for firmware updates.
The published exploit increases the risk of real-world abuse against unpatched Tenda F456 devices.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-25708
Vulnerability details
A flaw has been found in Tenda F456 1.0.0.5. Affected is the function SafeEmailFilter of the file /goform/SafeEmailFilter. This manipulation of the argument page causes buffer overflow. The attack can be initiated remotely. The exploit has been published and may…
more
be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in authenticated web endpoint (/goform/SafeEmailFilter) enables remote arbitrary code execution on the router, directly mapping to exploitation for privilege escalation (T1068) from low-priv accounts and exploitation of public-facing application (T1190).
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Timely flaw remediation through firmware patching directly eliminates the buffer overflow vulnerability in the SafeEmailFilter function.
Validating the 'page' argument at the /goform/SafeEmailFilter endpoint prevents the malformed input that triggers the buffer overflow.
Memory protection mechanisms like address space layout randomization and data execution prevention block arbitrary code execution resulting from the buffer overflow.