CVE-2021-47775Public exploit

Code execution via license-data SEH overwrite

Published Jan 15, 2026 · Updated Jan 15, 2026

Buffer overflow in LitexMedia YouTube Video Grabber 1.9.9.1 allows attackers to execute arbitrary code through crafted license data. The name-and-serial entry path writes an overlong payload past its buffer, letting 712 bytes of padding replace SEH control data and redirect execution. Exploitation requires a user to paste the payload into the Enter Code dialog and click OK; successful code runs with the application's privileges.

CVSS severity8.4
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in LitexMedia YouTube Video Grabber 1.9.9.1 allows attackers to execute arbitrary code through crafted license data. The name-and-serial entry path writes an overlong payload past its buffer, letting 712 bytes of padding replace SEH control data and redirect execution. Exploitation requires a user to paste the payload into the Enter Code dialog and click OK; successful code runs with the application's privileges.

The record

CVE
CVE-2021-47775
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
LitexMedia
Product
YouTube Video Grabber
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=1.9.9.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

LitexMedia · YouTube Video Grabberversion=1.9.9.1

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
8.4VulnCheckCVSS:3.1/AV:L/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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