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Vulnerability record · CVE-2020-36946 · published 27 January 2026

CVE-2020-36946: Flexense syncbreeze allocation without limits vulnerability

Flexense · Syncbreeze

SyncBreeze 10.0.28 contains a denial of service vulnerability in the login endpoint that allows remote attackers to crash the service. Attackers can send an oversized payload in the login request to overwhelm the application and potentially disrupt service availability.

8.7 CVSS 4.0 High EPSS 0.73% · top 47.7% CWE-770 · Allocation without limits
8.7CVSS 4.0 base score
0.73%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

SyncBreeze 10.0.28 contains a denial of service vulnerability in the login endpoint that allows remote attackers to crash the service. Attackers can send an oversized payload in the login request to overwhelm the application 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/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.syncbreeze.com Product
https://www.exploit-db.com/exploits/49291 ExploitThird Party Advisory
https://www.vulncheck.com/advisories/syncbreeze-login-denial-of-service Third Party Advisory
https://www.exploit-db.com/exploits/49291 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-6537Flexense syncbreeze memory buffer overflow vulnerabilityA buffer overflow vulnerability in the control protocol of Flexense SyncBreeze Enterprise v10.4.18 allows remote attackers to execute arbitrary code …EPSS 4.2%9.8CVE-2017-13696Flexense Enterprise Products Web Server GET Request Buffer OverflowA buffer overflow in the web server component of Dup Scout Enterprise 9.9.14, Disk Savvy Enterprise 9.9.14, Sync Breeze Enterprise 9.9.16, and Disk P…EPSS 78%analysed9.8CVE-2017-14980Flexense syncbreeze memory buffer overflow vulnerabilityBuffer overflow in Sync Breeze Enterprise 10.0.28 allows remote attackers to have unspecified impact via a long username parameter to /login.EPSS 22%8.8CVE-2017-17996Flexense syncbreeze memory buffer overflow vulnerabilityA buffer overflow vulnerability in "Add command" functionality exists in Flexense SyncBreeze Enterprise <= 10.3.14. The vulnerability can be triggere…EPSS 5.1%8.5CVE-2020-37100Flexense syncbreeze unquoted search path vulnerabilitySync Breeze Enterprise 12.4.18 contains an unquoted service path vulnerability that allows local attackers to execute arbitrary code with elevated sy…EPSS 0.20%8.5CVE-2025-59891Flexense diskpulse cross-site request forgery vulnerabilityCross-Site request forgery (CSRF) vulnerability in Sync Breeze Enterprise Server v10.4.18 and Disk Pulse Enterprise v10.4.18. An authenticated user c…EPSS 0.15%8.5CVE-2025-59892Flexense diskpulse cross-site request forgery vulnerabilityCross-Site request forgery (CSRF) vulnerability in Sync Breeze Enterprise Server v10.4.18 and Disk Pulse Enterprise v10.4.18. An authenticated user c…EPSS 0.15%8.5CVE-2025-59893Flexense diskpulse cross-site request forgery vulnerabilityCross-Site request forgery (CSRF) vulnerability in Sync Breeze Enterprise Server v10.4.18 and Disk Pulse Enterprise v10.4.18. An authenticated user c…EPSS 0.15%

Source: NIST National Vulnerability Database (record CVE-2020-36946), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.