CVE-2023-6340
CVE-2023-6340 is a medium-severity vulnerability in Sonicwall Capture Client with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (12th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-58581
- Weakness: CWE-787
- Affected product: Sonicwall Capture Client
- Published:
- Last modified:
Description
SonicWall Capture Client version 3.7.10, NetExtender client version 10.2.337 and earlier versions are installed with sfpmonitor.sys driver. The driver has been found to be vulnerable to Denial-of-Service (DoS) caused by Stack-based Buffer Overflow vulnerability.
Frequently asked questions
- What is CVE-2023-6340?
- SonicWall Capture Client version 3.7.10, NetExtender client version 10.2.337 and earlier versions are installed with sfpmonitor.sys driver. The driver has been found to be vulnerable to Denial-of-Service (DoS) caused by Stack-based Buffer Overflow vulnerability.
- How severe is CVE-2023-6340?
- CVE-2023-6340 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2023-6340 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-6340?
- CVE-2023-6340 primarily affects Sonicwall Capture Client. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2023-6340?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2023-6340 have an EU (EUVD) identifier?
- Yes. CVE-2023-6340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-58581.
- When was CVE-2023-6340 published?
- CVE-2023-6340 was published on 2024-01-18 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:sonicwall:capture_client:*:*:*:*:*:*:*:*
- cpe:2.3:a:sonicwall:netextender:*:*:*:*:*:windows:*:*
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