How severe is CVE-2021-47752?

CVE-2021-47752 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-47752 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-47752?

CVE-2021-47752 affects Sylkat-tools Awebserver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-47752?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2021-47752 have an EU (EUVD) identifier?

Yes. CVE-2021-47752 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2786.

When was CVE-2021-47752 published?

CVE-2021-47752 was published on 2026-01-15 and last updated on 2026-06-17.

CVE-2021-47752

CVE-2021-47752 is a high-severity vulnerability in Sylkat-tools Awebserver with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2786
Weakness: CWE-770
Affected product: Sylkat-tools Awebserver
Published: 2026-01-15
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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. Attackers can generate high-volume requests to multiple endpoints including /mysqladmin to potentially crash or render the service unresponsive.
How severe is CVE-2021-47752?: CVE-2021-47752 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-47752 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-47752?: CVE-2021-47752 affects Sylkat-tools Awebserver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-47752?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2021-47752 have an EU (EUVD) identifier?: Yes. CVE-2021-47752 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2786.
When was CVE-2021-47752 published?: CVE-2021-47752 was published on 2026-01-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sylkat-tools:awebserver:18:*:*:*:*:*:*:*

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