How severe is CVE-2021-33897?

CVE-2021-33897 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-33897 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33897?

CVE-2021-33897 affects Synthesiagame Synthesia. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-33897?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-33897 published?

CVE-2021-33897 was published on 2022-11-17 and last updated on 2026-06-17.

CVE-2021-33897

CVE-2021-33897 is a medium-severity vulnerability in Synthesiagame Synthesia with a CVSS 3.x base score of 5.5. 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: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Synthesiagame Synthesia
Published: 2022-11-17
Last modified: 2026-06-17

Description

A buffer overflow in Synthesia before 10.7.5567, when a non-Latin locale is used, allows user-assisted attackers to cause a denial of service (application crash) via a crafted MIDI file with malformed bytes. This file is mishandled during a deletion attempt. In Synthesia before 10.9, an improper path handling allows local attackers to cause a denial of service (application crash) via a crafted MIDI file with malformed bytes.

Frequently asked questions

What is CVE-2021-33897?: A buffer overflow in Synthesia before 10.7.5567, when a non-Latin locale is used, allows user-assisted attackers to cause a denial of service (application crash) via a crafted MIDI file with malformed bytes. This file is mishandled during a deletion attempt. In Synthesia before 10.9, an improper path handling allows local attackers to cause a denial of service (application crash) via a crafted MIDI file with malformed bytes.
How severe is CVE-2021-33897?: CVE-2021-33897 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-33897 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33897?: CVE-2021-33897 affects Synthesiagame Synthesia. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-33897?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-33897 published?: CVE-2021-33897 was published on 2022-11-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:synthesiagame:synthesia:*:*:*:*:*:*:*:*

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