CVE-2021-47774
CVE-2021-47774 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. 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-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v4: 8.4
- EPSS exploit prediction: 0% (39th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-2760
- Weakness: CWE-787
- Published:
- Last modified:
Description
Kingdia CD Extractor 3.0.2 contains a buffer overflow vulnerability in the registration name field that allows attackers to execute arbitrary code. Attackers can craft a malicious payload exceeding 256 bytes to overwrite Structured Exception Handler and gain remote code execution through a bind shell.
Frequently asked questions
- What is CVE-2021-47774?
- Kingdia CD Extractor 3.0.2 contains a buffer overflow vulnerability in the registration name field that allows attackers to execute arbitrary code. Attackers can craft a malicious payload exceeding 256 bytes to overwrite Structured Exception Handler and gain remote code execution through a bind shell.
- How severe is CVE-2021-47774?
- CVE-2021-47774 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-47774 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.
- How do I fix CVE-2021-47774?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2021-47774 have an EU (EUVD) identifier?
- Yes. CVE-2021-47774 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2760.
- When was CVE-2021-47774 published?
- CVE-2021-47774 was published on 2026-01-15 and last updated on 2026-06-17.
References
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