Search/CVE-2021-42383
● CVE — High

CVE-2021-42383

Vendorfedoraproject, busyboxProductfedora, busyboxDiscoveredNov 15, 2021UpdatedApr 23, 2025

A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the evaluate function

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CVSS v3.1
7.2 HIGH
EPSS
2.21%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Sep 27, 2026
▲ 0.10pp
2.12% → 2.21% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredHIGH
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Connections
3 relationships
Timeline
disclosure → media coverage
Nov 15, 2021
Disclosure — published as a CVE record. · last revised by NVD Apr 23, 2025