HOMEVULNERABILITIESCVE-2023-34551
HIGH

CVE-2023-34551

CWE-787Published: August 1, 2023· Updated: Jul 9, 2026

8.0
CVSS v3.1

Official Description

In certain EZVIZ products, two stack buffer overflows in netClientSetWlanCfg function of the EZVIZ SDK command server can allow an authenticated attacker present on the same local network as the camera to achieve remote code execution. This affects CS-C6N-B0-1G2WF Firmware versions before V5.3.0 build 230215 and CS-C6N-R101-1G2WF Firmware versions before V5.3.0 build 230215 and CS-CV310-A0-1B2WFR Firmware versions before V5.3.0 build 230221 and CS-CV310-A0-1C2WFR-C Firmware versions before V5.3.2 build 230221 and CS-C6N-A0-1C2WFR-MUL Firmware versions before V5.3.2 build 230218 and CS-CV310-A0-3C2WFRL-1080p Firmware versions before V5.2.7 build 230302 and CS-CV310-A0-1C2WFR Wifi IP66 2.8mm 1080p Firmware versions before V5.3.2 build 230214 and CS-CV248-A0-32WMFR Firmware versions before V5.2.3 build 230217 and EZVIZ LC1C Firmware versions before V5.3.4 build 230214. The impact is: execute arbitrary code (remote).

NVD Source

Technical Analysis

CVE-2023-34551 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.0.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

ezviz18 product(s)
cs-c6n-b0-1g2wf firmwarecs-c6n-b0-1g2wfcs-c6n-r101-1g2wf firmwarecs-c6n-r101-1g2wfcs-cv310-a0-1b2wfr firmwarecs-cv310-a0-1b2wfrcs-cv310-a0-1c2wfr-c firmwarecs-cv310-a0-1c2wfr-ccs-c6n-a0-1c2wfr-mul firmwarecs-c6n-a0-1c2wfr-mulcs-cv310-a0-3c2wfrl-1080p firmwarecs-cv310-a0-3c2wfrl-1080p+6
Source: NVD CPE · 18 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.ezviz.com/data-security/security-notice/detail/827
ADVISORYhttps://www.ezviz.com/data-security/security-notice/detail/827

All References (2)

→
https://www.ezviz.com/data-security/security-notice/detail/827Vendor Advisory
→
https://www.ezviz.com/data-security/security-notice/detail/827Vendor Advisory

Quick Facts

CVE IDCVE-2023-34551
CVSS Score8.0 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedAug 1, 2023

Related CVEs (CWE-787)

CVE-2011-1807
10.0
CVE-2018-6692
10.0
CVE-2018-10718
10.0
CVE-2009-2466
10.0
CVE-2014-1478
10.0
CVE-2019-5684
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-34551 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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