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CVE-2020-8863

70
FAUCET Score

CVE-2020-8863 is an authentication bypass vulnerability in D-Link DIR-867, DIR-878, and DIR-882 routers running firmware 1.10B04, allowing network-adjacent attackers to gain unauthorized access. This flaw stems from improper authentication algorithm implementation within HNAP login requests. With a CVSS score of 8.8 (High), it presents a significant risk as it requires no authentication or user interaction, enabling attackers to escalate privileges and execute code. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.20b03CPE matchmatch criteria
cpe:2.3:o:dlink:dir-878_firmware:*:*:*:*:*:*:*:*
<= 1.10b04CPE matchmatch criteria
cpe:2.3:o:dlink:dir-882_firmware:*:*:*:*:*:*:*:*
<= 1.10b04CPE matchmatch criteria
cpe:2.3:o:dlink:dir-867_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
76.73%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.7673 is in the 99th percentile among its peer group of 1,859 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

supportannouncement.us.dlink.com / announcement/publication.aspx
Third Party Advisory
zerodayinitiative.com / advisories/ZDI-20-267
Third Party AdvisoryVDB Entry