CVE-2026-7531

Summary

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 (released in 5.9.1): a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory.

Affected Software

VendorProductVersion RangeStatus
wolfSSLwolfSSL5.8.0 <= 5.9.1affected

Weaknesses

  • CWE-416: CWE-416 Use After Free

ADP Enrichment

CISA ADP Vulnrichment

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

References