Denial of Service via Buffer Overflow in aSc TimeTables Subject Titles

Publication date: 2026-01-28

Last updated on: 2026-01-28

Assigner: VulnCheck

Description

aSc TimeTables 2021.6.2 contains a denial of service vulnerability that allows attackers to crash the application by overwriting subject title fields with excessive data. Attackers can generate a 10,000-character buffer and paste it into the subject title to trigger application instability and potential crash.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-28

Last Modified

2026-01-28

Generated

2026-07-06

AI Q&A

2026-01-29

EPSS Evaluated

2026-07-05

NVD

CVE-2020-36943

EUVD

EUVD-2020-30891

Affected Vendors & Products

Vendor	Product	Version / Range
asc	timettables	2021.6.2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This vulnerability in aSc TimeTables 2021.6.2 is a denial of service issue where attackers can crash the application by inputting excessively long data into the subject title fields. Specifically, an attacker can paste a 10,000-character buffer into the subject title, causing the application to become unstable and potentially crash.

Impact Analysis

The vulnerability can cause the aSc TimeTables application to crash, leading to denial of service. This means legitimate users may be unable to access or use the application while it is unstable or down, potentially disrupting scheduling and related operations.

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