CVE-2026-57053

Summary

GNU libidn before 1.44 is prone to out-of-bounds reads of uninitialized memory in the ToUnicode APIs because of mishandling in idna_to_unicode_internal. The affected code is not present in libidn2.

Affected Software

VendorProductVersion RangeStatus
GNUlibidn0 < 1.44affected

Weaknesses

  • CWE-1284: CWE-1284 Improper Validation of Specified Quantity in Input

ADP Enrichment

CISA ADP Vulnrichment

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

References