CVE-2021-47774Public exploit

Code execution via registration name overflow

Published Jan 15, 2026 · Updated Jan 15, 2026

Stack-based buffer overflow in Kingdia CD Extractor 3.0.2 allows local users to execute arbitrary code through the registration name field. The registration dialog accepts more than 256 bytes without bounding the fixed-size buffer, allowing the payload to overwrite Structured Exception Handler control data. Exploitation requires a user to paste the crafted value and submit the dialog; resulting code runs with the application's privileges and can open a bind shell.

CVSS severity8.4
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Kingdia CD Extractor 3.0.2 allows local users to execute arbitrary code through the registration name field. The registration dialog accepts more than 256 bytes without bounding the fixed-size buffer, allowing the payload to overwrite Structured Exception Handler control data. Exploitation requires a user to paste the crafted value and submit the dialog; resulting code runs with the application's privileges and can open a bind shell.

The record

CVE
CVE-2021-47774
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Kingdia Software Inc
Product
Kingdia CD Extractor
Classifications
CWE-787, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Kingdia Software Inc · Kingdia CD Extractorversion=3.0.2

Published CVSS scores

8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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