CVE-2021-47824 - Vulnerability Details - OpenCVE

iDailyDiary 4.30 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the preferences tab name field. Attackers can paste a 2,000,000 character buffer into the default diary tab name to trigger an application crash.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

No data.

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References

Link	Providers
https://www.exploit-db.com/exploits/49898
https://www.splinterware.com/index.html
https://www.vulncheck.com/advisories/idailydiary-denial-of-service-poc

History

Fri, 16 Jan 2026 19:15:00 +0000

Type	Values Removed	Values Added
Description		iDailyDiary 4.30 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the preferences tab name field. Attackers can paste a 2,000,000 character buffer into the default diary tab name to trigger an application crash.
Title		iDailyDiary 4.30 - Denial of Service (PoC)
Weaknesses		CWE-1284
References		https://www.exploit-db.com/exploits/49898 https://www.splinterware.com/index.html https://www.vulncheck.com/advisories/idailydiary-denial-of-service-poc
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}` cvssV4_0 `{'score': 4.6, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-01-16T19:09:30.285Z

Updated: 2026-01-16T21:26:31.093Z

Reserved: 2026-01-14T17:11:19.898Z

Link: CVE-2021-47824

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-01-16T19:16:07.190

Modified: 2026-01-16T19:16:07.190

Link: CVE-2021-47824

Redhat

No data.

OpenCVE Enrichment

No data.

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