143 lines
5.8 KiB
JSON
143 lines
5.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-71256",
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"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
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"state": "PUBLISHED",
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"assignerShortName": "TuranSec",
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"dateReserved": "2026-08-05T11:43:52.778Z",
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"datePublished": "2026-08-05T11:44:21.992Z",
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"dateUpdated": "2026-08-10T11:46:18.081Z"
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},
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"containers": {
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"cna": {
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"title": "nanoMODBUS Client-Side Out-of-Bounds Read Leading to Wild-Pointer Write via object_id",
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"descriptions": [
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{
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"lang": "en",
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"value": "nanoMODBUS through v1.23.0 contains an out-of-bounds stack read leading to a wild-pointer write in nmbs_read_device_identification_basic / recv_read_device_identification_res in nanomodbus.c. A fixed 3-element stack array order[3] = {0,1,2} maps object IDs to buffer indices. The server-supplied object_id field (0-255, read directly from the wire) is used without any bounds check as buf_index = order[object_id].",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>nanoMODBUS through v1.23.0 contains an out-of-bounds stack read leading to a wild-pointer write in nmbs_read_device_identification_basic / recv_read_device_identification_res in nanomodbus.c. A fixed 3-element stack array order[3] = {0,1,2} maps object IDs to buffer indices. The server-supplied object_id field (0-255, read directly from the wire) is used without any bounds check as buf_index = order[object_id].</p>"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "CWE-125",
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"cweId": "CWE-125",
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"type": "CWE"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "debevv",
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"product": "nanoMODBUS",
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"programFiles": [
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"nanomodbus.c"
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],
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"versions": [
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{
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"version": "0",
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"lessThanOrEqual": "1.23.0",
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"status": "affected",
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"versionType": "semver"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH"
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}
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}
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],
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"references": [
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{
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"url": "https://github.com/debevv/nanoMODBUS",
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"tags": [
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"third-party-advisory"
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]
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},
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{
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"url": "https://github.com/debevv/nanoMODBUS/blob/master/nanomodbus.c",
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"tags": [
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"third-party-advisory"
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Shukhratbek Uraiimov",
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"type": "finder"
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}
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],
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"providerMetadata": {
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"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
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"shortName": "TuranSec",
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"dateUpdated": "2026-08-10T11:46:18.081Z"
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},
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"source": {
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"discovery": "EXTERNAL"
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},
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"datePublic": "2026-08-05T11:44:21.992Z"
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-05T12:25:23.617290Z",
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"id": "CVE-2026-71256",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-05T12:26:11.018Z"
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}
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}
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]
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}
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} |