QSearchQSearch

CVE-2021-38386

7.5 HIGH

In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mi...

Published: 2021-08-10 · Last updated: 2026-06-17

Severity and scoring

CVSS
7.5 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-120

Affected products

VendorProduct
contiki-oscontiki

Description

In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mishandled when a directory has many files with long names.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2021-40523 — In Contiki 3.0, Telnet option negotiation is mishandled (7.5 HIGH)
  • CVE-2021-38387 — In Contiki 3.0, a Telnet server that silently quits (before disconnection with clients) leads to connected clients entering an infinite l... (7.5 HIGH)
  • CVE-2021-38311 — In Contiki 3.0, potential nonterminating acknowledgment loops exist in the Telnet service (7.5 HIGH)

Same CWE

  • CVE-2026-12328 — Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151 (8.1 HIGH)
  • CVE-2026-12192 — A vulnerability was determined in GALAYOU Y4 1.0.0 (8.8 HIGH)
  • CVE-2026-36818 — Shenzhen Tenda Technology Co., Ltd Tenda W20E v15.11.0.6 was discovered to contain a buffer overflow in the wewifiWhiteUserInfo parameter... (7.5 HIGH)
  • CVE-2026-36817 — Shenzhen Tenda Technology Co., Ltd Tenda W15E v15.11.0.10 was discovered to contain a buffer overflow in the webAuthWhiteUserInfo paramet... (7.5 HIGH)
  • CVE-2026-36816 — Shenzhen Tenda Technology Co., Ltd Tenda W15E v15.11.0.10 was discovered to contain a buffer overflow in the wewifiWhiteUserInfo paramete... (7.5 HIGH)