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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.

PUBLISHED Reserved 2026-02-01 | Published 2026-02-06 | Updated 2026-02-17 | Assigner VulnCheck




MEDIUM: 6.7CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Product status

2020.11.4
affected

Credits

Ismael Nava finder

References

www.exploit-db.com/exploits/48133 (ExploitDB-48133) exploit

www.asctimetables.com/ (Vendor Homepage) product

www.vulncheck.com/...sories/asc-timetables-denial-of-service (VulnCheck Advisory: aSc TimeTables 2020.11.4 - Denial of Service) third-party-advisory

cve.org (CVE-2020-37109)

nvd.nist.gov (CVE-2020-37109)

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