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CVE-2021-41499

24
FAUCET Score

CVE-2021-41499 describes a buffer overflow vulnerability in the Server_debug function of Pyo versions prior to 1.03, affecting the pyo_project pyo library. This flaw allows remote attackers to trigger a Denial of Service (DoS) by providing an excessively long audio file name. Rated 7.5 HIGH, the vulnerability has a low attack complexity and requires no user interaction or privileges, but only impacts availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.03CPE matchmatch criteria
cpe:2.3:a:pyo_project:pyo:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0139 is in the 50th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: pyoFixed in: 1.0.3

Vendor Advisories (1)

pipGHSA-5f5c-687x-g5qmhigh

Classic Buffer Overflow in pyo

Jan 7, 2022

References

github.com / belangeo/pyo/issues/222
ExploitIssue TrackingThird Party Advisory