PoC Index

CVE-2021-42374

MEDIUM 5.3EPSS 0.6%

An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that

CVSS v3.1
5.3 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
CVSS v3.1
5.3 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
CVSS v2.0
3.3 LOWAV:L/AC:M/Au:N/C:P/I:N/A:P
EPSS
0.58% chance of exploitation in the next 30 days, 45th percentile
Published
2021-11-15
Updated
2025-11-03

Proof-of-concept exploits (1)

References

Related