What is CVE-2024-4020?

CVE-2024-4020 is a high-severity vulnerability in Tenda Fh1206, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2024-04-20.

How severe is CVE-2024-4020?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Tenda Fh1206

CVE-2024-4020

A vulnerability was found in Tenda FH1206 1.2.0.8(8155) and classified as critical. This issue affects the function fromAddressNat of the file /goform/addressNat. The manipulation of the argument entrys leads to buffer overflow. The attack…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (32.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda Fh1206 — versions 1.2.0.8(8155)

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

VDB-261671 | Tenda FH1206 addressNat fromAddressNat buffer overflow (vdb-entry, technical-description)
VDB-261671 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #316036 | Tenda FH1206 V1.2.0.8(8155) buffer overflow (third-party-advisory)
palm-vertebra-fe9.notion.site/fromAddressNat_entrys-b04d5356e5f04e30b37cb9037b9… (exploit)

Frequently asked questions

What is CVE-2024-4020?: CVE-2024-4020 is a high-severity vulnerability in Tenda Fh1206, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2024-04-20.
How severe is CVE-2024-4020?: High severity. CVSS v3 base score is 8.8 out of 10.