← Vulnerability feed

Vulnerability record · CVE-2020-27865 · published 12 February 2021

CVE-2020-27865: Dlink dap-1860 firmware authentication bypass via alternate path vulnerability

Dlink · Dap 1860 Firmware

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 WiFi extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the uhttpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the device. Was ZDI-CAN-10894.

8.8 CVSS 3.1 High EPSS 2.6% · top 15.0% CWE-288 · Authentication bypass via alternate pathCWE-287 · Improper authentication
8.8CVSS 3.1 base score, v2 8.3
2.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 WiFi extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the uhttpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the device. Was ZDI-CAN-10894.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10197 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1429/ Third Party AdvisoryVDB Entry
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10197 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1429/ Third Party AdvisoryVDB Entry

Track CVE-2020-27865 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2023-45208Dlink dap-1860 firmware command injection vulnerabilityA command injection in the parsing_xml_stasurvey function inside libcgifunc.so of the D-Link DAP-X1860 repeater 1.00 through 1.01b05-01 allows attack…EPSS 1.5%8.8CVE-2020-27864Dlink dap-1860 firmware command injection vulnerabilityThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 …EPSS 10%8.8CVE-2019-19597Dlink dap-1860 firmware incorrect authorization vulnerabilityD-Link DAP-1860 devices before v1.04b03 Beta allow arbitrary remote code execution as root without authentication via shell metacharacters within an …EPSS 21%8.8CVE-2019-19598Dlink dap-1860 firmware improper authentication vulnerabilityD-Link DAP-1860 devices before v1.04b03 Beta allow access to administrator functions without authentication via the HNAP_AUTH header timestamp value.…EPSS 3.5%8.0CVE-2020-15631Dlink dap-1860 firmware os command injection vulnerabilityThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 1.04B03_HOTFIX WiFi exten…EPSS 2.9%10.0CVE-2026-20079Cisco Secure Firewall Management Center authentication bypass to rootCisco Secure Firewall Management Center (FMC) Software contains an authentication bypass caused by an improper system process created at boot time. A…KEVEPSS 88%analysed9.3CVE-2026-19490Citrix NetScaler ADC and Gateway authentication bypass via alternate pathNetScaler ADC and NetScaler Gateway contain an authentication bypass via an alternate path or channel (CWE-288). The flaw is remotely reachable witho…KEVEPSS 7.0%analysed8.2CVE-2026-18556N-able N-central authentication bypass via alternate pathN-able N-central contains an authentication bypass (CWE-288) that lets an attacker reach protected functionality through an alternate path or channel…KEVEPSS 7.9%analysed

Source: NIST National Vulnerability Database (record CVE-2020-27865), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.