Vulnerability details

CVE-2023-53873

Syncbreeze Sync Breeze

SyncBreeze 15.2.24 Denial of Service via Login Endpoint Overflow

CVSS 4.0

8.7High

Official 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.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`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

Vendor	Product	Versions	Source
Syncbreeze	Sync Breeze	15.2.24	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2025-12-15
Last updated: 2026-04-07
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

0.49%

Probability of exploitation in 30 days

42.5%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-400
Uncontrolled Resource Consumption