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CVE-2020-15631

25
FAUCET Score

CVE-2020-15631 is a critical vulnerability affecting D-Link DAP-1860 WiFi extenders (firmware 1.04B03_HOTFIX) that allows network-adjacent attackers to execute arbitrary code. The flaw resides in the HNAP service's improper validation of the SOAPAction header, leading to a system call injection. Despite requiring authentication, the existing mechanism can be bypassed. Rated with a CVSS score of 8.0 (HIGH), this vulnerability has a network-adjacent attack vector with low attack complexity, enabling high impact on confidentiality, integrity, and availability. The EPSS score is low, suggesting a low probability of exploitation in the wild. Currently, there is no known active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, indicating a lack of widespread attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.04b01CPE matchmatch criteria
cpe:2.3:o:dlink:dap-1860_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.0HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.94%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0294 is in the 89th percentile among its peer group of 554 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 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
PatchVendor Advisory
zerodayinitiative.com / advisories/ZDI-20-879
Third Party AdvisoryVDB Entry