CVEvulnerability

CVE-2020-29557

9.8 CRITICAL Known exploited Published 2021-01-29 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

D-Link DIR-825 R1 Devices Buffer Overflow Vulnerability — D-Link DIR-825 R1 Devices

D-Link DIR-825 R1 devices contain a buffer overflow vulnerability in the web interface that may allow for remote code execution.

Added to KEV
2021-11-03
Remediation due
2022-05-03
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2020-29557
Status
Analyzed
Published
2021-01-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-119

Description

An issue was discovered on D-Link DIR-825 R1 devices through 3.0.1 before 2020-11-20. A buffer overflow in the web interface allows attackers to achieve pre-authentication remote code execution.

Affected configurations

• dlink dir-825 r1 firmware (<= 3.0.1)

Related

Weakness · CWE (1)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness

Referenced by CWE · observed example (1)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness

References