CVE-2023-5746
Published: 25 October 2023
Summary
CVE-2023-5746 is a critical-severity Use of Externally-Controlled Format String (CWE-134) vulnerability in Synology Bc500 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 9.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A format string vulnerability exists in the CGI component of Synology Camera Firmware versions prior to 1.0.5-0185, affecting the BC500 and TC500 camera models. Tracked as CVE-2023-5746 and assigned CWE-134, the flaw stems from the use of externally controlled format strings and carries a CVSS 3.1 score of 9.8.
Unauthenticated remote attackers can exploit the issue over the network with no user interaction required, enabling arbitrary code execution that fully compromises confidentiality, integrity, and availability of the affected devices.
The official Synology advisory Synology_SA_23_11 recommends updating the firmware to version 1.0.5-0185 or later to address the vulnerability. The associated EPSS score has remained flat at 0.0589 with no material increase observed since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-58032
Vulnerability details
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…
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TC500.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.