CVE-2021-40523

Katalog CVE

CVSS 7.5 · High EPSS 0,96%

Kerentanan Improper Check for Unusual or Exceptional Conditions pada contiki-os contiki. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

In Contiki 3.0, Telnet option negotiation is mishandled. During negotiation between a server and a client, the server may fail to give the WILL/WONT or DO/DONT response for DO and WILL commands because of improper handling of exception condition, which leads to property violations and denial of service. Specifically, a server sometimes sends no response, because a fixed buffer space is available for all responses and that space may have been exhausted.

Rincian

Terbit di NVD

5 September 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-754: Improper Check for Unusual or Exceptional Conditions

EPSS (30 hari)

0,96% peluang dieksploitasi; lebih tinggi dari 60,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/contiki-os/contiki/issues/2686 patch · advisory pihak ketiga