CVE-2021-39196

Name: CVE-2021-39196
Creator: NVD / NIST
Published: 2021-09-07T19:15:08.677+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.21%

Last modified Jun 17, 2026

CVE-2021-39196 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. pcapture is an open source dumpcap web service interface . In affected versions this vulnerability allows an authenticated but unprivileged user to use the REST API to capture and download packets with no capture filter and without adequate permissions. EPSS estimates a 1.21% chance of exploitation in the next 30 days.

Description

pcapture is an open source dumpcap web service interface . In affected versions this vulnerability allows an authenticated but unprivileged user to use the REST API to capture and download packets with no capture filter and without adequate permissions. This is important because the capture filters can effectively limit the scope of information that a user can see in the data captures. If no filter is present, then all data on the local network segment where the program is running can be captured and downloaded. v3.12 fixes this problem. There is no workaround, you must upgrade to v3.12 or greater.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.21%

64.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Pcapture Project	Pcapture	< 3.12

References

https://github.com/jdhwpgmbca/pcapture/commit/0f74f431e0970a2e5784dbd955cfa4760e3b1ef7Patch, Third Party Advisory
https://github.com/jdhwpgmbca/pcapture/issues/7Issue Tracking, Patch, Third Party Advisory
https://github.com/jdhwpgmbca/pcapture/security/advisories/GHSA-3r67-fxpr-p2qxIssue Tracking, Third Party Advisory
https://github.com/jdhwpgmbca/pcapture/commit/0f74f431e0970a2e5784dbd955cfa4760e3b1ef7Patch, Third Party Advisory
https://github.com/jdhwpgmbca/pcapture/issues/7Issue Tracking, Patch, Third Party Advisory
https://github.com/jdhwpgmbca/pcapture/security/advisories/GHSA-3r67-fxpr-p2qxIssue Tracking, Third Party Advisory

Timeline

Published: Sep 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39196?

How severe is CVE-2021-39196?

CVE-2021-39196 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39196?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39196?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST