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CVE-2017-20199

22
FAUCET Score

CVE-2017-20199 describes an improper access control vulnerability in Buttercup buttercup-browser-extension versions up to 0.14.2, specifically affecting an unknown functionality within the Vault Handler component. This vulnerability, with a CVSS score of 6.5 (Medium), can be exploited remotely with high attack complexity, potentially leading to high confidentiality impact. While public exploit code exists, its exploitation is considered difficult, and the vulnerability affects unsupported products. There is no evidence of active exploitation, and it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1CPE matchmatch criteria
cpe:2.3:a:buttercup:buttercup:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

1.3LOW

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
VS Confidentiality
LOW
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 39th percentile among its peer group of 26,208 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 0.1 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 / buttercup/buttercup-browser-extension/issues/92
Issue Tracking
github.com / buttercup/buttercup-browser-extension/issues/92
Issue Tracking
github.com / buttercup/buttercup-browser-extension/issues/92
Issue Tracking
github.com / buttercup/buttercup-browser-extension/pull/89
Patch
github.com / buttercup/buttercup-browser-extension/releases/tag/v1.0.1
Release Notes
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry