CVE-2023-3959 - CVE House
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Status published Critical CVE-2023-3959

Zavio IP Camera Stack-Based Buffer Overflow

Vulnerability Description

Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with firmware version M2.1.6.05 are vulnerable to multiple instances of stack-based overflows. While processing XML elements from incoming network requests, the product does not sufficiently check or validate allocated buffer size. This may lead to remote code execution.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Attila Szasz

References

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CVE-2023-39435
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Affected Vendor

Affected Software

IP Camera CF7500, IP Camera CF7300, IP Camera CF7201, IP Camera CF7501, IP Camera CB3211, IP Camera CB3212, IP Camera CB5220, IP Camera CB6231, IP Camera B8520, IP Camera B8220, IP Camera CD321
Vulnerable Versions:
version M2.1.6.05

Timeline

Official Publish: November 8th, 2023
Last Modified: January 16th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-121

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1485 Data Destruction
Impact