Vulnerability in Dlink Dir-842e
CVE-2021-27342
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
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.046 (91.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.046 · newest: 0.046 · change: 0.000
Affected products
- Dlink Dir-842e — versions r1
- Dlink Dir-842e Firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- supportannouncement.us.dlink.com/announcement/publication.aspx (Vendor Advisory)
- github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exp… (Exploit, Third Party Advisory)
- blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27342?
- CVE-2021-27342 is a medium-severity vulnerability in Dlink Dir-842e, classified under Observable Discrepancy. CVSS score: 5.9/10. Published 2021-05-17.
- How severe is CVE-2021-27342?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2021-27342 known to be exploited?
- 14 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.