Vulnerability · Published May 4, 2024 · Assigned by VulDB

CVE-2024-4491Tenda i21 formGetDiagnoseInfo stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in i21 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.5%top 26.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability classified as critical was found in Tenda i21 1.0.0.14(4656). This vulnerability affects the function formGetDiagnoseInfo. The manipulation of the argument cmdinput leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-263080. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Tenda	i21	1.0.0.14(4656)

Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

VDB-263080 | Tenda i21 formGetDiagnoseInfo stack-based overflow vdb-entry, technical-description
VDB-263080 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #323600 | Tenda i21 V1.0.0.14(4656) Buffer Overflow third-party-advisory
https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/i/i21/formGetDiagnoseInfo.md exploit