High

Pyo Buffer Overflow Vulnerability

  • Disclosed: 17.12.2021
  • Updated: 11.10.2026 12:18

Buffer overflow in ajaxsoundstudio.com Pyo <= 1.03 in the Server_jack_init function which allows attackers to conduct Denial of Service attacks by arbitrary constructing a overlong client_name.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) pyo < 1.0.4 1.0.4

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-120
Platform
Python (PyPI)
Package
pyo
Disclosed
17.12.2021
Updated
11.10.2026 12:18

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2021-890 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-qj27-32wp-ghrg - CC BY 4.0

Vulnerability history: pyo

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
12.2021 01.2022
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 2

Disclosures per year

  1. 2021: 1
  2. 2022: 1
  3. 2023: 0
  4. 2024: 0
  5. 2025: 0
  6. 2026: 0
  1. High · 7.5 CVE-2021-41499 < 1.0.3 1.0.3
  2. Pyo Buffer Overflow Vulnerability this entry
    High · 7.5 CVE-2021-41498 < 1.0.4 1.0.4

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