How severe is CVE-2021-41499?

CVE-2021-41499 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-2021-41499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41499?

CVE-2021-41499 affects Pyo Project Pyo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41499?

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.

When was CVE-2021-41499 published?

CVE-2021-41499 was published on 2021-12-17 and last updated on 2026-06-17.

CVE-2021-41499

CVE-2021-41499 is a high-severity vulnerability in Pyo Project Pyo 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 v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Pyo Project Pyo
Published: 2021-12-17
Last modified: 2026-06-17

Description

Buffer Overflow Vulnerability exists in ajaxsoundstudio.com n Pyo < 1.03 in the Server_debug function, which allows remote attackers to conduct DoS attacks by deliberately passing on an overlong audio file name.

Frequently asked questions

What is CVE-2021-41499?: Buffer Overflow Vulnerability exists in ajaxsoundstudio.com n Pyo < 1.03 in the Server_debug function, which allows remote attackers to conduct DoS attacks by deliberately passing on an overlong audio file name.
How severe is CVE-2021-41499?: CVE-2021-41499 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-2021-41499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41499?: CVE-2021-41499 affects Pyo Project Pyo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41499?: 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.
When was CVE-2021-41499 published?: CVE-2021-41499 was published on 2021-12-17 and last updated on 2026-06-17.

References

https://github.com/belangeo/pyo/issues/222

Affected products (1)

cpe:2.3:a:pyo_project:pyo:*:*:*:*:*:*:*:*

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