Bypass of BLOCKED ACL items on proxy protocol port over TCP or TLS
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| NLnet Labs | NSD | unaffected |
|
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nlnetlabs | Nsd |
|
Vendor Solution
This issue is fixed in 4.15.1 and all later versions.
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.440% probability within 30 days)
| Link | Providers |
|---|---|
| https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-19538.txt |
|
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:nlnetlabs:nsd:*:*:*:*:*:*:*:* | |
| Metrics |
cvssV3_1
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Nlnetlabs
Nlnetlabs nsd |
|
| Vendors & Products |
Nlnetlabs
Nlnetlabs nsd |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The BLOCKED access control list items that are evaluated to deny access on the the proxy protocol port can be bypassed completely when connecting over TCP or TLS and sending the query twice on connection that is kept open. | |
| Title | Bypass of BLOCKED ACL items on proxy protocol port over TCP or TLS | |
| Weaknesses | CWE-290 CWE-672 |
|
| References |
| |
| Metrics |
cvssV4_0
|