CVE-2020-37109
CVE-2020-37109 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v4: 6.7
- EPSS exploit prediction: 0% (28th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2020-31102
- Weakness: CWE-120
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-37109?
- 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.
- How severe is CVE-2020-37109?
- CVE-2020-37109 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2020-37109 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2020-37109?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2020-37109 have an EU (EUVD) identifier?
- Yes. CVE-2020-37109 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-31102.
- When was CVE-2020-37109 published?
- CVE-2020-37109 was published on 2026-02-07 and last updated on 2026-06-17.
References
- https://www.asctimetables.com/#!/home
- https://www.exploit-db.com/exploits/48133
- https://www.vulncheck.com/advisories/asc-timetables-denial-of-service
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