Denial of Service Vulnerability in iDailyDiary by Splinterware
CVE-2021-47824

4.6MEDIUM

Key Information:

Vendor

Splinterware

Status
Idailydiary
Vendor
CVE Published:
16 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47824?

iDailyDiary version 4.30 is susceptible to a denial of service vulnerability. By leveraging a buffer overflow in the preferences tab name field, attackers can exploit this weakness by inputting an excessively large buffer, specifically 2,000,000 characters. This can lead to the application crashing, interrupting user activity and potentially leading to data loss. It is crucial for users to be aware of this vulnerability and to apply necessary patches or mitigations.

Affected Version(s)

iDailyDiary 4.30

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47824 - Proof of Concept

References

https://www.exploit-db.com/exploits/49898
exploit
https://www.splinterware.com/index.html
product
https://www.vulncheck.com/advisories/idailydiary-denial-o...
third-party-advisory

CVSS V4

Score:
4.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ismael Nava
.