Auth bypass in D-Link Multiple Routers
CVE-2020-27863
This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DVA-2800 and DSL-2888A routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the dhttpd service, which listens on TCP port 8008 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-10912.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.010 (62.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: +0.000
Affected products
- D-Link Multiple Routers — versions firmeware version 2.3
- Dlink Dsl-2888a — versions revision_t
- Dlink Dsl-2888a Firmware — versions 2.30_au
- Dlink Dva-2800 — versions revision_t
- Dlink Dva-2800 Firmware — versions 2.30_au
Weakness classification (CWE)
References
- supportannouncement.us.dlink.com/announcement/publication.aspx (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-1427/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27863?
- CVE-2020-27863 is a medium-severity vulnerability in D-Link Multiple Routers, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 6.5/10. Published 2021-02-12.
- How severe is CVE-2020-27863?
- Medium severity. CVSS v3 base score is 6.5 out of 10.