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    CVE-2020-8864

    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 handling of empty passwords. An attacker can leverage this vulnerability to execute arbitrary code on the router. Was ZDI-CAN-9471.

    Published:Mar 23, 2020
    Last Modified:Nov 21, 2024
    EPS:Mar 23, 2020
    EPSS Score:0.11332
    CVSS Score:8.8

    Affected Products

    Vendor
    Dlink
    Product
    Dir-867
    Vendor
    Dlink
    Product
    Dir-867 Firmware
    Vendor
    Dlink
    Product
    Dir-878
    Vendor
    Dlink
    Product
    Dir-878 Firmware
    Vendor
    Dlink
    Product
    Dir-882
    Vendor
    Dlink
    Product
    Dir-882 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-697 Incorrect Comparison

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-120 Double Encoding
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-15 Command Delimiters
    CAPEC-182 Flash Injection
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-41 Using Meta-characters in E-mail Headers to Inject Malicious Payloads
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-44 Overflow Binary Resource File
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-6 Argument Injection
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities
    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2025-6334 (CVSS 7.4) — A vulnerability has been found in D-Link DIR-867 1.0 and classified as critical. This vulnerability affects th…
    CVE-2023-24762 (CVSS 9.8) — OS Command injection vulnerability in D-Link DIR-867 DIR_867_FW1.30B07 allows attackers to execute arbitrary c…
    CVE-2022-41140 (CVSS 8.8) — This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of mu…
    CVE-2022-1262 (CVSS 7.8) — A command injection vulnerability in the protest binary allows an attacker with access to the remote command l…
    CVE-2020-15633 (CVSS 8.8) — This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-L…
    CVE-2020-8863 (CVSS 8.8) — This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-L…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High