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Integer Underflow (Wrap or Wraparound)

CVE-2025-11931

Low
2.1/10

Summary

Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt. This issue specifically affects a call to the function "wc_XChaCha20Poly1305_Decrypt()" in versions through 5.8.2, which is not used with TLS connections; only from direct calls from an application.

  • LOW
  • NETWORK
  • LOW
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-191 - Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

References

Advisory Timeline

  • Published