Authenticated firewall crash via out-of-bounds read
Published Feb 24, 2026 · Updated Feb 24, 2026
Out-of-bounds read in SonicWall SonicOS allows remote authenticated users with administrative privileges to crash the firewall. SonicWall has not published the affected component, input vector, or memory operation that reads beyond its intended buffer. Administrative authentication and network reachability to SonicOS are required; successful exploitation interrupts firewall service without reported data disclosure or modification.
Summary
What happened
Out-of-bounds read in SonicWall SonicOS allows remote authenticated users with administrative privileges to crash the firewall. SonicWall has not published the affected component, input vector, or memory operation that reads beyond its intended buffer. Administrative authentication and network reachability to SonicOS are required; successful exploitation interrupts firewall service without reported data disclosure or modification.
The record
- CVE
- CVE-2026-0402
- Published
- Feb 24, 2026
- Updated
- Feb 24, 2026
- Vendor
- SonicWall
- Product
- SonicOS
- Classifications
- CWE-125, T1499
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Feb 24, 2026CVE publishedPublication date reported by the CVE source.
- Feb 24, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.0.1-5169 and older versions
- Affected versionversion=7.3.1-7013 and older versions
- Affected versionversion=8.1.0-8017 and older versions
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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