CVE-2023-0656
A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated...
A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.
- Record
CVE-2023-0656- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-121, CWE-787
- Updated
- 2026-11-09
CVE List No score
A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.
- Record
CVE-2023-0656- Weakness
- CWE-121
- Updated
- 2026-11-02
EUVDEUVD-2023-12690
A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.
- Record
EUVD-2023-12690- CVSS
- 0.0 None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-w97f-6vh7-h454
A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated...
A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.
- Record
GHSA-w97f-6vh7-h454- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-121, CWE-787
- Updated
- 2026-11-09
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | BishopFox/CVE-2022-22274_CVE-2023-0656 | 2024-01-12 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | GitHub Advisories | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-0656 is a high vulnerability (CVSS 7.5) in Sonicwall Sonicos, published March 2, 2023. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 41.3%, the 98th percentile. No source names a fixed version.