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    CVE-2021-20027

    A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request. This vulnerability affects SonicOS Gen5, Gen6, Gen7 platforms, and SonicOSv virtual firewalls.

    Published:Jun 14, 2021
    Last Modified:Nov 21, 2024
    EPS:Jun 14, 2021
    EPSS Score:0.0046
    CVSS Score:7.5

    Affected Products

    Vendor
    Sonicwall
    Product
    Nsa 2650
    Vendor
    Sonicwall
    Product
    Nsa 2700
    Vendor
    Sonicwall
    Product
    Nsa 3650
    Vendor
    Sonicwall
    Product
    Nsa 3700
    Vendor
    Sonicwall
    Product
    Nsa 4650
    Vendor
    Sonicwall
    Product
    Nsa 4700
    Vendor
    Sonicwall
    Product
    Nsa 5650
    Vendor
    Sonicwall
    Product
    Nsa 6650
    Vendor
    Sonicwall
    Product
    Nsa 6700
    Vendor
    Sonicwall
    Product
    Nsa 9250
    Vendor
    Sonicwall
    Product
    Nsa 9450
    Vendor
    Sonicwall
    Product
    Nsa 9650
    Vendor
    Sonicwall
    Product
    Nssp 12400
    Vendor
    Sonicwall
    Product
    Nssp 12800
    Vendor
    Sonicwall
    Product
    Nssp 13700
    Vendor
    Sonicwall
    Product
    Nssp 15700
    Vendor
    Sonicwall
    Product
    Nsv 10
    Vendor
    Sonicwall
    Product
    Nsv 100
    Vendor
    Sonicwall
    Product
    Nsv 1600
    Vendor
    Sonicwall
    Product
    Nsv 200
    Vendor
    Sonicwall
    Product
    Nsv 25
    Vendor
    Sonicwall
    Product
    Nsv 270
    Vendor
    Sonicwall
    Product
    Nsv 300
    Vendor
    Sonicwall
    Product
    Nsv 400
    Vendor
    Sonicwall
    Product
    Nsv 470
    Vendor
    Sonicwall
    Product
    Nsv 50
    Vendor
    Sonicwall
    Product
    Nsv 800
    Vendor
    Sonicwall
    Product
    Nsv 870
    Vendor
    Sonicwall
    Product
    Soho 250
    Vendor
    Sonicwall
    Product
    Soho 250w
    Vendor
    Sonicwall
    Product
    Sonicos
    Vendor
    Sonicwall
    Product
    Supermassive 9200
    Vendor
    Sonicwall
    Product
    Supermassive 9400
    Vendor
    Sonicwall
    Product
    Supermassive 9600
    Vendor
    Sonicwall
    Product
    Supermassive 9800
    Vendor
    Sonicwall
    Product
    Supermassive E10200
    Vendor
    Sonicwall
    Product
    Supermassive E10400
    Vendor
    Sonicwall
    Product
    Supermassive E10800
    Vendor
    Sonicwall
    Product
    Tz270
    Vendor
    Sonicwall
    Product
    Tz270w
    Vendor
    Sonicwall
    Product
    Tz300
    Vendor
    Sonicwall
    Product
    Tz300p
    Vendor
    Sonicwall
    Product
    Tz300w
    Vendor
    Sonicwall
    Product
    Tz350
    Vendor
    Sonicwall
    Product
    Tz350w
    Vendor
    Sonicwall
    Product
    Tz370
    Vendor
    Sonicwall
    Product
    Tz370w
    Vendor
    Sonicwall
    Product
    Tz400
    Vendor
    Sonicwall
    Product
    Tz400w
    Vendor
    Sonicwall
    Product
    Tz470
    Vendor
    Sonicwall
    Product
    Tz470w
    Vendor
    Sonicwall
    Product
    Tz500
    Vendor
    Sonicwall
    Product
    Tz500w
    Vendor
    Sonicwall
    Product
    Tz570
    Vendor
    Sonicwall
    Product
    Tz570p
    Vendor
    Sonicwall
    Product
    Tz570w
    Vendor
    Sonicwall
    Product
    Tz600
    Vendor
    Sonicwall
    Product
    Tz600p
    Vendor
    Sonicwall
    Product
    Tz670

    Exploits

    No exploit reference

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    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