diff --git a/src/aleph/sdk/client/services/crn.py b/src/aleph/sdk/client/services/crn.py
index 004888fa..da5a24a7 100644
--- a/src/aleph/sdk/client/services/crn.py
+++ b/src/aleph/sdk/client/services/crn.py
@@ -1,3 +1,4 @@
+import logging
 from datetime import datetime
 from typing import TYPE_CHECKING, Dict, List, Optional, Union
 
@@ -5,7 +6,7 @@
 from aiohttp.client_exceptions import ClientResponseError
 from aleph_message.models import ItemHash
 from packaging.version import InvalidVersion, Version
-from pydantic import BaseModel, NonNegativeInt, PositiveInt
+from pydantic import BaseModel, NonNegativeInt, PositiveInt, ValidationError
 
 from aleph.sdk.conf import settings
 from aleph.sdk.exceptions import MethodNotAvailableOnCRN, VmNotFoundOnHost
@@ -22,6 +23,8 @@
 if TYPE_CHECKING:
     from aleph.sdk.client.http import AlephHttpClient
 
+logger = logging.getLogger(__name__)
+
 
 class CpuLoad(BaseModel):
     load1: float
@@ -120,10 +123,23 @@ class CrnList(DictLikeModel):
     @classmethod
     def from_api(cls, payload: dict) -> "CrnList":
         raw_list = payload.get("crns", [])
-        crn_list = [
-            CRN.model_validate(item) if not isinstance(item, CRN) else item
-            for item in raw_list
-        ]
+        crn_list: List[CRN] = []
+        for item in raw_list:
+            if isinstance(item, CRN):
+                crn_list.append(item)
+                continue
+            try:
+                crn_list.append(CRN.model_validate(item))
+            except ValidationError as exc:
+                identifier = "<unknown>"
+                if isinstance(item, dict):
+                    identifier = (
+                        item.get("hash")
+                        or item.get("name")
+                        or item.get("address")
+                        or identifier
+                    )
+                logger.warning("Skipping malformed CRN %s: %s", identifier, exc)
         return cls(crns=crn_list)
 
     def find_gpu_on_network(self):
diff --git a/tests/unit/test_services.py b/tests/unit/test_services.py
index bb4b3f3e..edd257a6 100644
--- a/tests/unit/test_services.py
+++ b/tests/unit/test_services.py
@@ -536,3 +536,57 @@ def test_crn_version_filter_no_filter_returns_all():
 
     result = crn_list.filter_crn()
     assert len(result) == 2
+
+
+def test_crn_list_from_api_skips_malformed_entries(caplog):
+    """One malformed CRN must not crash the whole list (availability hardening)."""
+    payload = {
+        "crns": [
+            {
+                "hash": "good-crn",
+                "name": "good",
+                "address": "0xgood",
+                "version": "1.0.0",
+                "payment_receiver_address": None,
+            },
+            {
+                "hash": "bad-crn",
+                "name": "bad",
+                "address": "0xbad",
+                "version": "1.0.0",
+                "payment_receiver_address": None,
+                "system_usage": {
+                    "cpu": {
+                        "count": 1,
+                        "load_average": {"load1": 0, "load5": 0, "load15": 0},
+                        "core_frequencies": {"min": 0, "max": 0},
+                    },
+                    "mem": {"total_kB": 1, "available_kB": 0},
+                    "disk": {"total_kB": 1, "available_kB": 0},
+                    "period": {
+                        "start_timestamp": "2026-01-01T00:00:00",
+                        "duration_seconds": 0,
+                    },
+                    "properties": {
+                        "cpu": {"architecture": "x86_64", "vendor": "intel"}
+                    },
+                    "gpu": {"devices": [{"vendor": "NVIDIA"}], "available_devices": []},
+                    "active": True,
+                },
+            },
+            "not-a-dict",
+            None,
+        ]
+    }
+
+    with caplog.at_level("WARNING"):
+        result = CrnList.from_api(payload)
+
+    assert len(result.crns) == 1
+    assert result.crns[0].hash == "good-crn"
+    assert any("bad-crn" in record.message for record in caplog.records)
+
+
+def test_crn_list_from_api_empty_payload():
+    assert CrnList.from_api({}).crns == []
+    assert CrnList.from_api({"crns": []}).crns == []