CVE-2023-34552

In certain EZVIZ products, two stack based buffer overflows in mulicast_parse_sadp_packet and mulicast_get_pack_type functions of the SADP multicast protocol can allow an unauthenticated 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.

Published: 2023-08-01 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-34552 is rated Moderate Risk (47.5/100): CVSS High severity, with low exploitation likelihood (EPSS 0.46%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-34552

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.87% 0.46% -0.41%
2 2026-05-28 0.77% 0.87% +0.10%
3 2026-04-26 — 0.77% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-34552

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
4.0 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.5 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-34552

Affected software / configurations for CVE-2023-34552

Vendor Product Version Raw CPE
ezviz cs-c6n-b0-1g2wf_firmware <= 5.3.0 cpe:2.3:o:ezviz:cs-c6n-b0-1g2wf_firmware:*:*:*:*:*:*:*:*
ezviz cs-c6n-r101-1g2wf_firmware <= 5.3.0 cpe:2.3:o:ezviz:cs-c6n-r101-1g2wf_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv310-a0-1b2wfr_firmware <= 5.3.0 cpe:2.3:o:ezviz:cs-cv310-a0-1b2wfr_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv310-a0-1c2wfr-c_firmware <= 5.3.2 cpe:2.3:o:ezviz:cs-cv310-a0-1c2wfr-c_firmware:*:*:*:*:*:*:*:*
ezviz cs-c6n-a0-1c2wfr-mul_firmware <= 5.3.2 cpe:2.3:o:ezviz:cs-c6n-a0-1c2wfr-mul_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv310-a0-3c2wfrl-1080p_firmware <= 5.2.7 cpe:2.3:o:ezviz:cs-cv310-a0-3c2wfrl-1080p_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv310-a0-1c2wfr_firmware <= 5.3.2 cpe:2.3:o:ezviz:cs-cv310-a0-1c2wfr_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv248-a0-32wmfr_firmware <= 5.2.3 cpe:2.3:o:ezviz:cs-cv248-a0-32wmfr_firmware:*:*:*:*:*:*:*:*
ezviz lc1c_firmware <= 5.3.4 cpe:2.3:o:ezviz:lc1c_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-34552

cvelogic Threat Intelligence