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    CVE-2026-0402

    A post-authentication Out-of-bounds Read vulnerability in SonicOS allows a remote attacker to crash a firewall.

    Published:Feb 24, 2026
    Last Modified:Apr 18, 2026
    EPS:Feb 24, 2026
    EPSS Score:0.00216
    CVSS Score:4.9

    Affected Products

    Vendor
    Sonicwall
    Product
    Nsa 2700
    Vendor
    Sonicwall
    Product
    Nsa 2800
    Vendor
    Sonicwall
    Product
    Nsa 3700
    Vendor
    Sonicwall
    Product
    Nsa 3800
    Vendor
    Sonicwall
    Product
    Nsa 4700
    Vendor
    Sonicwall
    Product
    Nsa 4800
    Vendor
    Sonicwall
    Product
    Nsa 5700
    Vendor
    Sonicwall
    Product
    Nsa 5800
    Vendor
    Sonicwall
    Product
    Nsa 6700
    Vendor
    Sonicwall
    Product
    Nssp 10700
    Vendor
    Sonicwall
    Product
    Nssp 11700
    Vendor
    Sonicwall
    Product
    Nssp 13700
    Vendor
    Sonicwall
    Product
    Nssp 15700
    Vendor
    Sonicwall
    Product
    Nsv270
    Vendor
    Sonicwall
    Product
    Nsv470
    Vendor
    Sonicwall
    Product
    Nsv870
    Vendor
    Sonicwall
    Product
    Sonicos
    Vendor
    Sonicwall
    Product
    Tz270
    Vendor
    Sonicwall
    Product
    Tz270w
    Vendor
    Sonicwall
    Product
    Tz280
    Vendor
    Sonicwall
    Product
    Tz370
    Vendor
    Sonicwall
    Product
    Tz370w
    Vendor
    Sonicwall
    Product
    Tz380
    Vendor
    Sonicwall
    Product
    Tz470
    Vendor
    Sonicwall
    Product
    Tz470w
    Vendor
    Sonicwall
    Product
    Tz480
    Vendor
    Sonicwall
    Product
    Tz570
    Vendor
    Sonicwall
    Product
    Tz570p
    Vendor
    Sonicwall
    Product
    Tz570w
    Vendor
    Sonicwall
    Product
    Tz580
    Vendor
    Sonicwall
    Product
    Tz670
    Vendor
    Sonicwall
    Product
    Tz680
    Vendor
    Sonicwall
    Product
    Tz80

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-0206 (CVSS 4.9) — A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash…
    CVE-2026-0205 (CVSS 6.8) — A post-authentication Path Traversal vulnerability in SonicOS allows an attacker to interact with usually rest…
    CVE-2026-0204 (CVSS 8) — A vulnerability in the access control mechanism of SonicOS may allow certain management interface functions to…
    CVE-2026-3439 (CVSS 4.9) — A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remot…
    CVE-2026-0401 (CVSS 4.9) — A post-authentication NULL Pointer Dereference vulnerability in SonicOS allows a remote attacker to crash a fi…
    CVE-2026-0400 (CVSS 4.9) — A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.…
    CVE-2026-0399 (CVSS 4.9) — Multiple post-authentication stack-based buffer overflow vulnerabilities in the SonicOS management interface d…
    CVE-2025-40601 (CVSS 7.5) — A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated atta…
    CVE-2025-40600 (CVSS 9.8) — Use of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unau…
    CVE-2024-53704 (CVSS 9.8) — An Improper Authentication vulnerability in the SSLVPN authentication mechanism allows a remote attacker to by…

    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