diff --git a/changes/44800-ollama-resolved-in-version b/changes/44800-ollama-resolved-in-version
new file mode 100644
index 00000000000..a447dfd2dcc
--- /dev/null
+++ b/changes/44800-ollama-resolved-in-version
@@ -0,0 +1 @@
+- Fixed missing `resolved_in_version` for CVE-2025-63389 on Ollama (resolved in v0.12.4), which was absent because the NVD record only provides a `versionEndIncluding` constraint.
diff --git a/server/vulnerabilities/nvd/cpe_matching_rules.go b/server/vulnerabilities/nvd/cpe_matching_rules.go
index 87eac7b3580..27196075168 100644
--- a/server/vulnerabilities/nvd/cpe_matching_rules.go
+++ b/server/vulnerabilities/nvd/cpe_matching_rules.go
@@ -5,9 +5,48 @@ import (
 	"strconv"
 	"strings"
 
+	feednvd "github.com/fleetdm/fleet/v4/server/vulnerabilities/nvd/tools/cvefeed/nvd"
 	"github.com/fleetdm/fleet/v4/server/vulnerabilities/nvd/tools/wfn"
 )
 
+// resolvedVersionOverride supplies a known upstream fix version for a CVE whose NVD record only
+// provides a versionEndIncluding constraint (so the resolved version can't be derived from the
+// feed). Like GetKnownNVDBugRules, this works around bad/incomplete data in the NVD dataset, but
+// it is consulted only as a fallback - the live NVD feed always takes precedence (see
+// getMatchingVersionEndExcluding). See https://github.com/fleetdm/fleet/issues/44800.
+type resolvedVersionOverride struct {
+	vendor            string
+	product           string
+	resolvedInVersion string
+}
+
+// knownResolvedVersionOverrides maps a CVE to its known upstream fix version. Add an entry here
+// only when NVD reports the CVE without a versionEndExcluding (so resolved_in_version comes back
+// empty) but the fix version is known. Remove the entry once NVD publishes the correct data.
+var knownResolvedVersionOverrides = map[string]resolvedVersionOverride{
+	// CVE-2025-63389: NVD lists ollama as vulnerable through (and including) v0.12.3 via
+	// versionEndIncluding with no versionEndExcluding. The fix shipped in the next release, v0.12.4.
+	"CVE-2025-63389": {vendor: "ollama", product: "ollama", resolvedInVersion: "0.12.4"},
+}
+
+// findResolvedVersionOverride returns the known resolved version for the given CVE and host
+// software, if one is configured and applicable, or an empty string otherwise. The caller must
+// already have confirmed that the host is affected by the CVE; the version guard here only avoids
+// reporting a resolved version for a host that is already at or above the fix version.
+func findResolvedVersionOverride(cve string, hostSoftwareMeta *wfn.Attributes) string {
+	override, ok := knownResolvedVersionOverrides[cve]
+	if !ok || hostSoftwareMeta == nil {
+		return ""
+	}
+	if hostSoftwareMeta.Vendor != override.vendor || hostSoftwareMeta.Product != override.product {
+		return ""
+	}
+	if feednvd.SmartVerCmp(wfn.StripSlashes(hostSoftwareMeta.Version), override.resolvedInVersion) != -1 {
+		return ""
+	}
+	return override.resolvedInVersion
+}
+
 type CPEMatchingRules []CPEMatchingRule
 
 // GetKnownNVDBugRules returns a list of CPEMatchingRules used for
diff --git a/server/vulnerabilities/nvd/cve.go b/server/vulnerabilities/nvd/cve.go
index f2005718b24..03d5bf70add 100644
--- a/server/vulnerabilities/nvd/cve.go
+++ b/server/vulnerabilities/nvd/cve.go
@@ -688,10 +688,29 @@ func expandCPEAliases(cpeItem *wfn.Attributes) []*wfn.Attributes {
 	return cpeItems
 }
 
-// Returns the versionEndExcluding string for the given CVE and host software meta
-// data, if it exists in the NVD feed.  This effectively gives us the version of the
-// software it needs to upgrade to in order to address the CVE.
+// getMatchingVersionEndExcluding returns the version of the software it needs to upgrade to in
+// order to address the CVE. It is derived from the NVD feed's versionEndExcluding when available;
+// otherwise, as a fallback, it consults knownResolvedVersionOverrides for CVEs whose NVD record
+// only provides versionEndIncluding. Authoritative NVD data always takes precedence over the
+// fallback. The caller must already have confirmed that the host is affected by the CVE.
 func getMatchingVersionEndExcluding(ctx context.Context, cve string, hostSoftwareMeta *wfn.Attributes, dict cvefeed.Dictionary, logger *slog.Logger) (string, error) {
+	resolved, err := versionEndExcludingFromFeed(ctx, cve, hostSoftwareMeta, dict, logger)
+	if err != nil {
+		return "", err
+	}
+	if resolved != "" {
+		return resolved, nil
+	}
+
+	// The NVD feed yielded no resolved version (e.g. the record only has versionEndIncluding).
+	// Fall back to a known upstream fix version, if one is configured for this CVE.
+	// See https://github.com/fleetdm/fleet/issues/44800.
+	return findResolvedVersionOverride(cve, hostSoftwareMeta), nil
+}
+
+// versionEndExcludingFromFeed returns the versionEndExcluding string for the given CVE and host
+// software meta data, if it exists in the NVD feed.
+func versionEndExcludingFromFeed(ctx context.Context, cve string, hostSoftwareMeta *wfn.Attributes, dict cvefeed.Dictionary, logger *slog.Logger) (string, error) {
 	vuln, ok := dict[cve].(*feednvd.Vuln)
 	if !ok {
 		return "", nil
diff --git a/server/vulnerabilities/nvd/cve_test.go b/server/vulnerabilities/nvd/cve_test.go
index 4b5f6dbb9b8..43da1f7d06a 100644
--- a/server/vulnerabilities/nvd/cve_test.go
+++ b/server/vulnerabilities/nvd/cve_test.go
@@ -1123,6 +1123,52 @@ func TestGetMatchingVersionEndExcluding(t *testing.T) {
 			want:    "6.72.10.07",
 			wantErr: false,
 		},
+		{
+			// NVD only provides versionEndIncluding for this CVE, so the resolved version comes
+			// from knownResolvedVersionOverrides. See #44800.
+			name: "versionEndIncluding-only CVE uses resolved version override",
+			cve:  "CVE-2025-63389",
+			meta: &wfn.Attributes{
+				Vendor:  "ollama",
+				Product: "ollama",
+				Version: "0.12.3",
+			},
+			want:    "0.12.4",
+			wantErr: false,
+		},
+		{
+			name: "resolved version override applies to older vulnerable versions",
+			cve:  "CVE-2025-63389",
+			meta: &wfn.Attributes{
+				Vendor:  "ollama",
+				Product: "ollama",
+				Version: "0.12.0",
+			},
+			want:    "0.12.4",
+			wantErr: false,
+		},
+		{
+			name: "resolved version override does not apply at or above the fix version",
+			cve:  "CVE-2025-63389",
+			meta: &wfn.Attributes{
+				Vendor:  "ollama",
+				Product: "ollama",
+				Version: "0.12.4",
+			},
+			want:    "",
+			wantErr: false,
+		},
+		{
+			name: "resolved version override does not apply to other products",
+			cve:  "CVE-2025-63389",
+			meta: &wfn.Attributes{
+				Vendor:  "notollama",
+				Product: "notollama",
+				Version: "0.12.0",
+			},
+			want:    "",
+			wantErr: false,
+		},
 	}
 
 	for _, tt := range tests {