Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-28117

24
FAUCET Score

CVE-2021-28117 describes a vulnerability in KDE Discover (versions prior to 5.21.3 and 5.18.7) where the application automatically creates links to potentially dangerous, non-HTTP/HTTPS URLs based on content from store.kde.org. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and a high impact on integrity, requiring no user interaction. While the vulnerability is significant, there is currently no evidence of active exploitation, publicly available exploit code, or notable community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.21.3CPE matchmatch criteria
cpe:2.3:a:kde:discover:*:*:*:*:*:*:*:*

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:H/A:N

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

Exploit Intelligence

EPSS Score
1.56%
Probability of exploitation in next 30 days
EPSS Percentile
72.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0156 is in the 55th percentile among its peer group of 51,551 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)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / KDE/discover/commit/fcd3b30552bf03a384b1a16f9bb8db029c111356
Patch
github.com / KDE/discover/releases
Third Party Advisory
invent.kde.org / plasma/discover/commit/94478827aab63d2e2321f0ca9ec5553718798e60
PatchThird Party Advisory
kde.org / info/security/advisory-20210310-1.txt
PatchVendor Advisory
userbase.kde.org / Discover
ProductVendor Advisory