CVEvulnerability
CVE-2021-27342
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-05-17
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-203
Description
An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack
Affected configurations
• dlink dir-842e firmware (<= 3.0.2)
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html Exploit, Third Party Advisory
- https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py Exploit, Third Party Advisory
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 Vendor Advisory
- https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html Exploit, Third Party Advisory
- https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py Exploit, Third Party Advisory
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 Vendor Advisory