How severe is CVE-2021-41498?

CVE-2021-41498 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-2021-41498 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41498?

CVE-2021-41498 affects Pyo Project Pyo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41498?

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-2021-41498 published?

CVE-2021-41498 was published on 2021-12-17 and last updated on 2026-06-17.

CVE-2021-41498

CVE-2021-41498 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% (61st 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 in ajaxsoundstudio.com Pyo &lt and 1.03 in the Server_jack_init function. which allows attackers to conduct Denial of Service attacks by arbitrary constructing a overlong server name.

Frequently asked questions

What is CVE-2021-41498?: Buffer overflow in ajaxsoundstudio.com Pyo &lt and 1.03 in the Server_jack_init function. which allows attackers to conduct Denial of Service attacks by arbitrary constructing a overlong server name.
How severe is CVE-2021-41498?: CVE-2021-41498 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-2021-41498 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41498?: CVE-2021-41498 affects Pyo Project Pyo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41498?: 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-2021-41498 published?: CVE-2021-41498 was published on 2021-12-17 and last updated on 2026-06-17.

References

https://github.com/belangeo/pyo/issues/221

Affected products (1)

cpe:2.3:a:pyo_project:pyo:1.03:*:*:*:*:*:*:*

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