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
- Affected
- busybox
- CVSS v3.1 NVD
- 5.3 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H - CVSS v2.0 NVD
- 3.3 LOW
AV:L/AC:M/Au:N/C:P/I:N/A:P - EPSS
- 0.62% chance of exploitation in the next 30 days, 49th percentile
- Published
- 2021-11-15
- Updated
- 2025-11-03
Proof-of-concept exploits (1)
Security advisories
- https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-j…
- https://security.netapp.com/advisory/ntap-20211223-0002