HOMEVULNERABILITIESCVE-2023-5746
CRITICAL

CVE-2023-5746

CWE-134Published: October 25, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Risk Analysis

Synology Camera models BC500 and TC500 are vulnerable to a format string flaw in the CGI component, allowing remote code execution. This critical vulnerability allows unauthenticated attackers to compromise the camera firmware.

No public exploit is known, and the vulnerability is not in the KEV. It is remotely exploitable with low complexity.

Recommended Action

Update Synology Camera firmware to version 1.0.5-0185 or later.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-5746 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

synology4 product(s)
bc500 firmwarebc500tc500 firmwaretc500
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (2)

Quick Facts

CVE IDCVE-2023-5746
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-134
CISA KEVNo
Affected1 vendor(s)
PublishedOct 25, 2023

Related CVEs (CWE-134)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2023-5746 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.