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CVE-2021-39196

21
FAUCET Score

CVE-2021-39196 affects pcapture, an open-source dumpcap web service interface, allowing authenticated but unprivileged users to capture and download all network traffic without a filter via the REST API. This vulnerability carries a CVSS score of 6.5 (Medium) due to its network attack vector, low complexity, and high confidentiality impact, as it exposes all data on the local network segment. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion, with the vulnerability not listed in CISA's KEV catalog. Organizations should upgrade to pcapture v3.12 or greater to remediate this issue, as no workaround exists.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.12CPE matchmatch criteria
cpe:2.3:a:pcapture_project:pcapture:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 80th percentile among its peer group of 21,958 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / jdhwpgmbca/pcapture/commit/0f74f431e0970a2e5784dbd955cfa4760e3b1ef7
PatchThird Party Advisory
github.com / jdhwpgmbca/pcapture/issues/7
Issue TrackingPatchThird Party Advisory
github.com / jdhwpgmbca/pcapture/security/advisories/GHSA-3r67-fxpr-p2qx
Issue TrackingThird Party Advisory