aSc TimeTables 2020.11.4 contains a denial of service vulnerability that allows attackers to crash the application by overwriting the Subject title field with a large buffer. Attackers can generate a 1000-character buffer and paste it into the Subject title to trigger an application crash and potential instability.

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 High

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.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
asc Applied Software Consultants aSc TimeTables affected
Version Status Constraints
2020.11.4 affected —

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.asctimetables.com/#!/home cve-icon cve-icon
https://www.exploit-db.com/exploits/48133 cve-icon cve-icon
https://www.vulncheck.com/advisories/asc-timetables-denial-of-service cve-icon cve-icon
History

Fri, 06 Feb 2026 23:30:00 +0000

Type Values Removed Values Added
Description aSc TimeTables 2020.11.4 contains a denial of service vulnerability that allows attackers to crash the application by overwriting the Subject title field with a large buffer. Attackers can generate a 1000-character buffer and paste it into the Subject title to trigger an application crash and potential instability.
Title aSc TimeTables 2020.11.4 - Denial of Service
Weaknesses CWE-120
References
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': 6.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-06T23:14:06.283Z

Reserved: 2026-02-01T13:16:06.490Z

Link: CVE-2020-37109

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-07T00:15:54.433

Modified: 2026-02-07T00:15:54.433

Link: CVE-2020-37109

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses