CVE-2026-26157

Summary

A flaw was found in BusyBox. Incomplete path sanitization in its archive extraction utilities allows an attacker to craft malicious archives that when extracted, and under specific conditions, may write to files outside the intended directory. This can lead to arbitrary file overwrite, potentially enabling code execution through the modification of sensitive system files.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Hardened Images1.37.0-7.2.hum1 < *unaffected

Weaknesses

  • CWE-73: External Control of File Name or Path

Workarounds

As a prevention measure, avoid extracting archives from untrusted sources using BusyBox utilities. If extraction of untrusted archives is necessary, perform it within a highly isolated and restricted environment, such as a container with a read-only root filesystem and minimal privileges, to limit the potential impact of arbitrary file overwrites.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

Additional References

busybox: BusyBox: Arbitrary file overwrite and potential code execution via incomplete path sanitization

Additional References

References