Denial of Service Vulnerability in aSc TimeTables by aSc
CVE-2020-36943

6.7MEDIUM

Key Information:

Vendor

Asc Applied Software Consultants, S.r.o.

Status
Asc Timetables
Vendor
CVE Published:
28 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36943?

aSc TimeTables version 2021.6.2 contains a vulnerability that enables denial of service attacks. Attackers can exploit this flaw by inserting an excessively large string, up to 10,000 characters, into the subject title fields. This action can destabilize the application, leading to potential crashes and interruptions in its normal functionality, compromising user experience and operational reliability.

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Affected Version(s)

asc Timetables 2021.6.2

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-2020-36943 - Proof of Concept

References

https://www.exploit-db.com/exploits/49147
exploit
https://www.asctimetables.com/#!/home
product
https://www.asctimetables.com/#!/home/download
product

CVSS V4

Score:
6.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
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
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