CVE-2026-33983

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, progressive_decompress_tile_upgrade() detects a mismatch via progressive_rfx_quant_cmp_equal() but only emits WLog_WARN, execution continues. The wrapped value (247) is used as a shift exponent, causing undefined behavior and an approximately 80 billion iteration loop (CPU DoS). This issue has been patched in version 3.24.2.

Affected Software

VendorProductVersion RangeStatus
FreeRDPFreeRDP< 3.24.2affected

Weaknesses

  • CWE-190: CWE-190: Integer Overflow or Wraparound
  • CWE-252: CWE-252: Unchecked Return Value

ADP Enrichment

CISA ADP Vulnrichment

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

FreeRDP: FreeRDP: Denial of Service via specially crafted Remote Desktop Protocol messages

Additional References

References