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    CVE-2020-26143

    An issue was discovered in the ALFA Windows 10 driver 1030.36.604 for AWUS036ACH. The WEP, WPA, WPA2, and WPA3 implementations accept fragmented plaintext frames in a protected Wi-Fi network. An adversary can abuse this to inject arbitrary data frames independent of the network configuration.

    Published:May 11, 2021
    Last Modified:Apr 14, 2026
    EPS:May 11, 2021
    EPSS Score:0.004
    CVSS Score:6.5

    Affected Products

    Vendor
    Alfa
    Product
    Awus036h
    Vendor
    Alfa
    Product
    Awus036h Firmware
    Vendor
    Arista
    Product
    C-65
    Vendor
    Arista
    Product
    C-65 Firmware
    Vendor
    Arista
    Product
    C-75
    Vendor
    Arista
    Product
    C-75 Firmware
    Vendor
    Arista
    Product
    O-90
    Vendor
    Arista
    Product
    O-90 Firmware
    Vendor
    Arista
    Product
    W-68
    Vendor
    Arista
    Product
    W-68 Firmware
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Siemens
    Product
    Scalance W700 Ieee 802.11n
    Vendor
    Siemens
    Product
    Scalance W700 Ieee 802.11n Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-111 JSON Hijacking (aka JavaScript Hijacking)
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-141 Cache Poisoning
    CAPEC-142 DNS Cache Poisoning
    CAPEC-153 Input Data Manipulation
    CAPEC-160 Exploit Script-Based APIs
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-21 Exploitation of Trusted Identifiers
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-384 Application API Message Manipulation via Man-in-the-Middle
    CAPEC-385 Transaction or Event Tampering via Application API Manipulation
    CAPEC-386 Application API Navigation Remapping
    CAPEC-387 Navigation Remapping To Propagate Malicious Content
    CAPEC-388 Application API Button Hijacking
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-510 SaaS User Request Forgery
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-75 Manipulating Writeable Configuration Files
    CAPEC-76 Manipulating Web Input to File System Calls
    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-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-89 Pharming
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    References

    http://www.openwall.com/lists/oss-security/2021/05/11/12
    https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
    https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
    https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
    https://www.fragattacks.com
    http://www.openwall.com/lists/oss-security/2021/05/11/12
    https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
    https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
    https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
    https://www.fragattacks.com
    https://cert-portal.siemens.com/productcert/html/ssa-019200.html
    https://cert-portal.siemens.com/productcert/html/ssa-913875.html

    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