Vulnerability · Published Apr 27, 2024 · Assigned by VulDB

CVE-2024-4250Tenda i21 wifiSSIDset formwrlSSIDset 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 1.3% (higher than 72% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.3%top 28.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in Tenda i21 1.0.0.14(4656). It has been declared as critical. Affected by this vulnerability is the function formwrlSSIDset of the file /goform/wifiSSIDset. The manipulation of the argument ssidIndex leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-262141 was assigned to this vulnerability. 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-262141 | Tenda i21 wifiSSIDset formwrlSSIDset stack-based overflow vdb-entry, technical-description
VDB-262141 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #319835 | Tenda i21 V1.0.0.14(4656) Buffer Overflow third-party-advisory
https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/i/i21/formwrlSSIDset.md exploit