Vulnerability Description
nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization code. Specially crafted network input can cause byte-buffer addresses at odd offsets to be cast to uint16_t or wider integer pointers and directly dereferenced without alignment checks. This results in undefined behavior and can cause process termination in UBSan-instrumented builds or on strict-alignment architectures, leading to denial of service.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/ntop/nDPI/issues/3213
- https://github.com/ntop/nDPI/pull/3231
- https://github.com/utoni/nDPI/commit/6698f14bf6025394a537fe23f413cf79e9d13594
- https://github.com/utoni/nDPI/commit/694231bb43ff21f452fbc2b53fcf6cdc9a99f75f
- https://github.com/utoni/nDPI/commit/6ce1280c52ed52a97332c3fe58fd2b47b867ec6e
- https://github.com/utoni/nDPI/commit/8fc3b439920021a77165f8aee4f81b25bc88629e
- https://github.com/ntop/nDPI/issues/3213
FAQ
What is CVE-2026-88357?
CVE-2026-88357 is a vulnerability with a CVSS score of 7.5 (HIGH). nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization code. Specially crafted network input can cause byte-buffer addresses at odd offsets to be cast to uint16_...
How severe is CVE-2026-88357?
CVE-2026-88357 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-88357?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.