What’s Vulnerable › Vulnerabilities

CVE-2023-53873: SyncBreeze 15.2.24 Denial of Service via Login Endpoint Overflow

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-15 · updated 2026-06-17
• Weakness: CWE-400

Description

SyncBreeze 15.2.24 contains a denial of service vulnerability in the login authentication mechanism that allows attackers to crash the service. Attackers can send an oversized password parameter with repeated 'password=' values to overwhelm the login endpoint and potentially disrupt service availability.

Affected products

• SyncBreeze: 15.2.24

References

• https://www.exploit-db.com/exploits/51725
• https://www.syncbreeze.com/
• https://www.vulncheck.com/advisories/syncbreeze-denial-of-service-via-login-endpoint-overflow

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