CVE-2026-1005 | THREATINT

Description

Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by ssl_DecodePacket. The underflow wraps a 16-bit length to a large value that is passed to AEAD decryption routines, causing heap buffer overflow and a crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.

PUBLISHED Reserved 2026-01-15 | Published 2026-03-19 | Updated 2026-03-19 | Assigner wolfSSL

LOW: 2.1CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-191 Integer Underflow (Wrap or Wraparound)

Product status

Default status

unaffected

Any version

affected

Credits

Prasanth Sundararajan finder

References

github.com/wolfSSL/wolfssl/pull/9571

cve.org (CVE-2026-1005)

nvd.nist.gov (CVE-2026-1005)

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