Auth bypass in D-Link Multiple Routers
CVE-2020-8863
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-867, DIR-878, and DIR-882 routers with firmware 1.10B04. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from the lack of proper implementation of the authentication algorithm. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the router. Was ZDI-CAN-9470.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.767 (99.5th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.767 · newest: 0.767 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zerodayinitiative.com/advisories/ZDI-20-267/ (VDB Entry, Third Party Advisory)
- supportannouncement.us.dlink.com/announcement/publication.aspx (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8863?
- CVE-2020-8863 is a high-severity vulnerability in D-Link Multiple Routers, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 8.8/10. Published 2020-03-23.
- How severe is CVE-2020-8863?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-8863 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.