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Vulnerability record · CVE-2021-47752 · published 15 January 2026

CVE-2021-47752: Sylkat-tools awebserver allocation without limits vulnerability

SSylkat Tools · Awebserver

AWebServer GhostBuilding 18 contains a denial of service vulnerability that allows remote attackers to overwhelm the server by sending multiple concurrent HTTP requests. Attackers can generate high-volume requests to multiple endpoints including /mysqladmin to potentially crash or render the service unresponsive.

8.7 CVSS 4.0 High EPSS 0.57% · top 55.0% CWE-770 · Allocation without limits
8.7CVSS 4.0 base score
0.57%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

AWebServer GhostBuilding 18 contains a denial of service vulnerability that allows remote attackers to overwhelm the server by sending multiple concurrent HTTP requests. Attackers can generate high-volume requests to multiple endpoints including /mysqladmin to potentially crash or render the service unresponsive.

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://sylkat-tools.rf.gd/awebserver.htm Product
https://play.google.com/store/apps/details?id=com.sylkat.apache&hl=en Product
https://www.exploit-db.com/exploits/50629 Exploit
https://www.exploit-db.com/exploits/50629 Exploit

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2021-47752), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.