ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-32818

SonicWall SonicOS NULL Pointer Dereference

Published Apr 23, 2025 · catalog updated May 10, 2026 · SonicWall SonicOS

Patch now

CVE-2025-32818 is in the CISA known-exploited catalog. Confirm SonicWall SonicOS against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.5
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.83%
Remediation
Remediation guidance
Affected products
vendor SonicWall SonicOS · vendor SonicWall SonicOS 8.0.0-8037 and earlier versions

A Null Pointer Dereference vulnerability in the SonicOS SSLVPN Virtual office interface allows a remote, unauthenticated attacker to crash the firewall, potentially leading to a Denial-of-Service (DoS) condition.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor SonicWall SonicOSversion unspecified
  • vendor SonicWall SonicOS 8.0.0-8037 and earlier versions8.0.0-8037 and earlier versions

How to fix CVE-2025-32818

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-32818 is in the CISA known-exploited catalog. Confirm SonicWall SonicOS against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with SonicWall SonicOS 8.0.0-8037 and earlier versions 8.0.0-8037 and earlier versions. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 0.83%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 10, 2026 · VulnCheck KEV

    Detected

    A Null Pointer Dereference vulnerability in the SonicOS SSLVPN Virtual office interface allows a remote, unauthenticated attacker to crash the firewall, potentially leading to a Denial-of-Service (DoS) condition.

  2. May 10, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2025-32818

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-32818

    30-day exploitation probability 0.8%

    first.org
  • EUVDVulnerability recordEUVD-2025-12160

    A Null Pointer Dereference vulnerability in the SonicOS SSLVPN Virtual office interface allows a remote, unauthenticated attacker to crash the firewall, potentially leading to a Denial-of-Service (DoS) condition.

    euvd.enisa.europa.eu
  • VulnCheck KEVConfirmed exploitationCVE-2025-32818

    A Null Pointer Dereference vulnerability in the SonicOS SSLVPN Virtual office interface allows a remote, unauthenticated attacker to crash the firewall, potentially leading to a Denial-of-Service (DoS) condition.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.