Vulnerability · Published Sep 24, 2026 · Assigned by mitre
CVE-2026-88357
High 7.5
In plain English
A high-severity security flaw in the ndpi package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ndpi | no fix listed | DEBIAN-CVE-2026-88357 |
| Debian:13 | ndpi | no fix listed | DEBIAN-CVE-2026-88357 |
| Debian:14 | ndpi | no fix listed | DEBIAN-CVE-2026-88357 |
| Ubuntu:22.04:LTS | ndpi | no fix listed | UBUNTU-CVE-2026-88357 |
| Ubuntu:24.04:LTS | ndpi | no fix listed | UBUNTU-CVE-2026-88357 |
| Ubuntu:26.04:LTS | ndpi | no fix listed | UBUNTU-CVE-2026-88357 |
| Ubuntu:26.10 | ndpi | no fix listed | UBUNTU-CVE-2026-88357 |
Affected products (as reported)
Weakness: CWE-1335 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/ntop/nDPI/issues/3213
- https://github.com/utoni/nDPI/commit/6ce1280c52ed52a97332c3fe58fd2b47b867ec6e
- https://github.com/utoni/nDPI/commit/8fc3b439920021a77165f8aee4f81b25bc88629e
- https://github.com/utoni/nDPI/commit/694231bb43ff21f452fbc2b53fcf6cdc9a99f75f
- https://github.com/utoni/nDPI/commit/6698f14bf6025394a537fe23f413cf79e9d13594
- https://github.com/ntop/nDPI/pull/3231