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CVE-2021-47752

Sylkat-tools Awebserver denial of service

7.5 HIGHPublic exploitEPSS 0.57%
  1. Published15 Jan 2026

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Sylkat-tools Awebserver18

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2021-47752 being actively exploited?

CVE-2021-47752 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.57%.

How severe is CVE-2021-47752?

CVE-2021-47752 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.57% probability of exploitation.

Which products are affected by CVE-2021-47752?

Affected products include Sylkat-tools Awebserver.

How do I fix CVE-2021-47752?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-47752 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.