VDB-344831 · CVE-2020-37109 · Exploit 48133

aSc Applied Software Consultants aSc TimeTables 2020.11.4 Subject title buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in aSc Applied Software Consultants aSc TimeTables 2020.11.4. This vulnerability affects unknown code. The manipulation of the argument Subject title leads to buffer overflow. This vulnerability is documented as CVE-2020-37109. The attack needs to be performed locally. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in aSc Applied Software Consultants aSc TimeTables 2020.11.4 and classified as critical. This issue affects an unknown code. The manipulation of the argument Subject title with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released by Ismael Nava as 48133. It is possible to read the advisory at exploit-db.com. The identification of this vulnerability is CVE-2020-37109 since 02/01/2026. The exploitation is known to be easy. Attacking locally is a requirement. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (48133). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

aSc Applied Software Consultants

Name

aSc TimeTables

Version

2020.11.4

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
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CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

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VulDB Base Score: 🔒
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VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/01/2026 CVE reserved
02/07/2026 +6 days Advisory disclosed
02/07/2026 +0 days VulDB entry created
02/07/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 48133
Researcher: Ismael Nava
Status: Not defined

CVE: CVE-2020-37109 (🔒)
GCVE (CVE): GCVE-0-2020-37109
GCVE (VulDB): GCVE-100-344831
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/07/2026 08:42
Changes: 02/07/2026 08:42 (80)
Complete: 🔍
Cache ID: 216::103