CVE-2023-53873

SyncBreeze 15.2.24 Denial of Service via Login Endpoint Overflow

Published Dec 15, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:flexense:syncbreeze:15.2.24:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Flexense
Flexense syncbreeze
Vendors & Products Flexense
Flexense syncbreeze
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title SyncBreeze 15.2.24 Denial of Service via Login Endpoint Overflow
Weaknesses CWE-400
References
Metrics cvssV4_0

{'score': 8.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Apr 7, 2026, 2:06 PM
Reserved
Dec 13, 2025, 2:25 PM
Status
Deferred
Published
Dec 15, 2025, 9:15 PM
Modified
Jun 17, 2026, 6:46 AM