CVE-2023-5746

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-25 · updated 2026-06-17
Weakness: CWE-134

Description

A vulnerability regarding use of externally-controlled format string is found in the cgi component. This allows remote attackers to execute arbitrary code via unspecified vectors. The following models with Synology Camera Firmware versions before 1.0.5-0185 may be affected: BC500 and TC500.

Affected products

Synology Bc500 Firmware: before 1.0.5-0185 — fixed in 1.0.5-0185
Synology Tc500 Firmware: before 1.0.5-0185 — fixed in 1.0.5-0185

How to fix

Upgrade to a fixed version: Synology Bc500 Firmware 1.0.5-0185; Synology Tc500 Firmware 1.0.5-0185. Check the vendor advisory for mitigations.

References

https://www.synology.com/en-global/security/advisory/Synology_SA_23_11
https://www.synology.com/en-global/security/advisory/Synology_SA_23_11

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