CVE-2023-53873

SyncBreeze 15.2.24 Denial of Service via Login Endpoint Overflow

CVSS 8.7 HIGHEPSS 0.4%CWE-400

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

15 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products

Syncbreeze · SyncBreeze

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

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