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TI-2023-05819 Aliases CVE-2023-6340GHSA-pvh3-5rhh-wcg5

Stack-based buffer overflow in SonicWall Capture Client

Priority LOW 24CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00213 11th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SonicWallCapture Client3.7.10 and earlier versions—No fix listedCNA
SonicWallNetExtender10.2.337 and earlier versions—No fix listedCNA
  • Capture Client VendorSonicWall Affected 3.7.10 and earlier versions Fixed in — No fix listed CNA
  • NetExtender VendorSonicWall Affected 10.2.337 and earlier versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:sonicwall:capture_client:*:*:*:*:*:*:*:*up to 3.7.10VulnerableSonicWall
cpe:2.3:a:sonicwall:netextender:*:*:*:*:*:windows:*:*up to 10.2.337VulnerableSonicWall
  • cpe:2.3:a:sonicwall:capture_client:*:*:*:*:*:*:*:* Versions up to 3.7.10 Vulnerable ·SonicWall
  • cpe:2.3:a:sonicwall:netextender:*:*:*:*:*:windows:*:* Versions up to 10.2.337 Vulnerable ·SonicWall

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-6340
  2. 2026-10-03 Alias added: GHSA-pvh3-5rhh-wcg5

References

Advisory 1

  • TI-2021-02413 NULL pointer deref in signature_algorithms processing CVSS 3.1MEDIUM 5.9
  • TI-2021-02414 CA certificate check bypass with X509_V_FLAG_X509_STRICT CVSS 3.1HIGH 7.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences