CVE-2021-27342
MEDIUM
5.9
CVSS Score
Published: May 17, 2021 at 12:20 PM UTC
Updated: June 17, 2026 at 03:44 AM UTC
2 products affected across 1 vendorDir 842E FirmwareDir-842E
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Severity
MEDIUM5.9
Exploit prediction
EPSS 5%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.htmlx_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.pyx_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225CVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-203
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