Is CVE-2021-28117 in the CISA KEV catalog?

No. CVE-2021-28117 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28117?

CVE-2021-28117 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-28117?

CVE-2021-28117 has an EPSS score of 1.56% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28117?

Upgrade plasma-discover on debian 11 to 5.20.5-3 or later.

CVE & CISA-KEV Catalog

CVE-2021-28117

HIGHEPSS 72th pctl

7.5

CVSS v3

NVD

Description

libdiscover/backends/KNSBackend/KNSResource.cpp in KDE Discover before 5.21.3 automatically creates links to potentially dangerous URLs (that are neither https:// nor http://) based on the content of the store.kde.org web site. (5.18.7 is also a fixed version.)

How to fix

Remediation Available

plasma-discoverDebian

Fixed in:5.20.5-3CVE-2021-28117

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.56%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Patch3

Vendor Advisory1

userbase.kde.org

Third-Party Advisory1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.