CVE-2026-88357
nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
7.5
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.
- Record
CVE-2026-88357- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1335
- Updated
- 2026-11-02
EUVDEUVD-2026-86285
7.5
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.
- Record
EUVD-2026-86285- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hjcq-5876-2cpr
7.5
nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization...
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.
- Record
GHSA-hjcq-5876-2cpr- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1335
- Updated
- 2026-11-02
NVD
7.5
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.
- Record
CVE-2026-88357- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1335
- Updated
- 2026-11-02
OSV
7.5
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.
- Record
CVE-2026-88357- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-88357
7.5
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.
- Record
DEBIAN-CVE-2026-88357- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-88357
7.5
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.
- Record
UBUNTU-CVE-2026-88357- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ndpiDebian:12 |
All versions, plus listed versions 4.2-24.2-2.14.2-2.1~exp1 |
None known |
ndpiDebian:13 |
All versions, plus listed versions 4.2-2.1 |
None known |
ndpiDebian:14 |
All versions, plus listed versions 4.2-2.1 |
None known |
ndpiUbuntu:16.04:LTS |
All versions, plus listed versions 1.5.0-11.6-11.7.1~git20151130.6f3d5a7-1 |
None known |
ndpiUbuntu:18.04:LTS |
All versions, plus listed versions 1.8-12.2-1 |
None known |
ndpiUbuntu:20.04:LTS |
All versions, plus listed versions 2.6-42.6-5 |
None known |
ndpiUbuntu:22.04:LTS |
All versions, plus listed versions 4.0-44.2-2 |
None known |
ndpiUbuntu:24.04:LTS |
All versions, plus listed versions 4.2-24.2-2.14.2-2.1build1 |
None known |
ndpiUbuntu:26.10 |
All versions, plus listed versions 4.2-2.1build2 |
None known |
ndpiUbuntu:26.04:LTS |
All versions, plus listed versions 4.2-2.1build14.2-2.1build2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-88357 is a high vulnerability (CVSS 7.5) in ndpi, published September 24, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 48th percentile. No source names a fixed version.
References
github.com/ntop/nDPI/issues/3213
github.com/utoni/nDPI/commit/6ce1280c52ed52a97332c3fe58fd2b47b867ec6e
github.com/utoni/nDPI/commit/8fc3b439920021a77165f8aee4f81b25bc88629e
github.com/utoni/nDPI/commit/694231bb43ff21f452fbc2b53fcf6cdc9a99f75f
github.com/utoni/nDPI/commit/6698f14bf6025394a537fe23f413cf79e9d13594
github.com/ntop/nDPI/pull/3231