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Vulnerabilities

Vulnerability · CVE-2021-47752

AWebServer GhostBuilding 18 contains a denial of service vulnerability that allows remote attackers to overwhelm the server by sending multiple concurrent HTTP requests.

Published Jan 15, 2026 · catalog updated Apr 7, 2026 · Sylkat-Tools AWebServer GhostBuilding

Last checked Oct 30, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2021-47752 is not in CISA KEV. FIRST estimates a 58.00% chance of exploitation in the next 30 days. Check whether you run Sylkat-Tools AWebServer GhostBuilding.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
58.00%
Remediation
Vendor / distro source
Affected products
vendor Sylkat-Tools AWebServer GhostBuilding AWebServer GhostBuilding 18

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Sylkat-Tools AWebServer GhostBuilding AWebServer GhostBuilding 18AWebServer GhostBuilding 18

How to fix CVE-2021-47752

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    No version range is stored, so an installed version cannot be checked on this page.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-47752 is not in CISA KEV. FIRST estimates a 58.00% chance of exploitation in the next 30 days. Check whether you run Sylkat-Tools AWebServer GhostBuilding.

Which versions are affected?

Compare what you have installed with Sylkat-Tools AWebServer GhostBuilding AWebServer GhostBuilding 18 AWebServer GhostBuilding 18. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 58.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 15, 2026 · EUVD

    Detected

    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.

  2. Apr 7, 2026 · EUVD

    Updated

    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.

Sources

  • EUVDVulnerability recordEUVD-2026-2786

    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 o

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Apr 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDOct 30, 2026