CVE-2026-116744
ntop nDPI through 6.0 Out-of-Bounds Read in SoftEther Dissector
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 26, 2026
- Updated
- Oct 26, 2026
- Reserved
- Oct 26, 2026
Description
ntop nDPI through 6.0 contains an out-of-bounds read vulnerability in dissect_softether_host_fqdn() in softether.c that compares host_name using the consumed byte count instead of data length. Remote attackers can send crafted short UDP datagrams on already-classified SoftEther flows, causing strncmp to read beyond the packet payload buffer.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
nDPIntop |
|
References
- Pull Request #3298issue-trackingpatch
- Patch Commitpatch
- https://github.com/ntop/nDPIproduct
- https://github.com/ntop/nDPI/blob/6.0/src/lib/protocols/softether.c#L203technical-description
- https://hackmd.io/@haindpwn/ndpi-softether-host-fqdn-strncmp-oob-readthird-party-advisory
- https://github.com/ntop/nDPI/issues/3291issue-tracking
- VulnCheck Advisory: ntop nDPI through 6.0 Out-of-Bounds Read in SoftEther Dissectorthird-party-advisory
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