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CVE-2019-16881

31
FAUCET Score

CVE-2019-16881 is a critical use-after-free vulnerability affecting the portaudio-rs crate through version 0.3.1 for Rust, stemming from a lack of unwind safety in stream callbacks. This flaw allows for arbitrary code execution with a CVSS score of 9.8, indicating a severe impact on confidentiality, integrity, and availability, and can be exploited remotely with low attack complexity. Despite its critical severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.3.1CPE matchmatch criteria
cpe:2.3:a:portaudio-rs_project:portaudio-rs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.51%
Probability of exploitation in next 30 days
EPSS Percentile
83.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0251 is in the 73rd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: portaudio-rsFixed in: 0.3.2

Vendor Advisories (1)

rustGHSA-qpjr-ch72-2qq4critical

Use after free in portaudio-rs

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2019-0022.html
ExploitThird Party Advisory