PT-2025-51291 · Unknown · Syncbreeze

Mohamed Youssef · Published 2025-12-15 · Updated 2025-12-21 · CVE-2023-53873

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions SyncBreeze version 15.2.24

Description SyncBreeze version 15.2.24 is subject to a denial of service condition within its login authentication process. An attacker can disrupt service availability by sending an oversized password parameter to the login endpoint. Specifically, repeatedly including 'password=' values can overwhelm the system and cause a crash. The vulnerable API endpoint is the login endpoint.

Recommendations Limit the size of the password parameter accepted by the login authentication mechanism.

Exploit

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2023-53873

Affected Products

Syncbreeze

References · 5

• 🔥 https://exploit-db.com/exploits/51725 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-53873 · Security Note
• https://twitter.com/CVEnew/status/2002857376383385972 · Twitter Post
• https://vulncheck.com/advisories/syncbreeze-denial-of-service-via-login-endpoint-overflow · Note
• https://syncbreeze.com · Note