CVE-2024-4248: tenda i21_firmware Stack-based Buffer Overflow
Vulnerability summary
CVE-2024-4248 is a high (CVSS 9.0) Stack-based Buffer Overflow vulnerability in tenda i21_firmware. EPSS estimates a 1.35% chance of exploitation in the next 30 days, higher than 71.2% of scored vulnerabilities.
Timeline
- 27-04-2024PublishedVulnerability first disclosed.
- 01-08-2024Last modifiedVulnerability information updated.
Description
A vulnerability was found in Tenda i21 1.0.0.14(4656) and classified as critical. This issue affects the function formQosManage_user. The manipulation of the argument ssidIndex leads to stack-based buffer overflow. The attack may be initiated remotely. The associated identifier of this vulnerability is VDB-262139. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVSS metrics
5 scores · 2 sources · 3 versions- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.0HighAV:N/AC:L/Au:S/C:C/I:C/A:C
EPSS trend
Probability
1.35%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
0.00 pp
From 1.35% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Tenda1 product
- i21_firmware1.0.0.14\(4656\)
1 vendor · 1 product