CVE-2026-14618
Open5GS AMF nnrf-handler.c amf_nnrf_handle_nf_discover denial of service
Medium 5.3 Exploitation: poc
A vulnerability was detected in Open5GS up to 2.7.7. Affected by this vulnerability is the function amf_nnrf_handle_nf_discover of the file src/amf/nnrf-handler.c of the component AMF. The manipulation results in denial of service. The attack may be launched remotely. The exploit is now public and may be used. The patch is identified as fb5f67703de0213fb9c6e6ef3b48b6c1707e9503. It is best practice to apply a patch to resolve this issue.
Assigner
VulDB
VulDB
Published
2026-07-04
2026-07-04
Updated
2026-10-21
2026-10-21
Reserved
2026-07-03
2026-07-03
Scores
| Source | CVSS | Score | Severity | Vector |
|---|---|---|---|---|
| VulDB | 4.0 | 5.3 | Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P |
| VulDB | 3.1 | 4.3 | Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C |
| VulDB | 3.0 | 4.3 | Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C |
| VulDB | 2.0 | 4 | AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C |
Weaknesses
Affected
| Vendor | Product | Versions |
|---|---|---|
| n/a | Open5GS | 2.7.0 (affected) 2.7.1 (affected) 2.7.2 (affected) 2.7.3 (affected) 2.7.4 (affected) 2.7.5 (affected) 2.7.6 (affected) 2.7.7 (affected) |
References
- https://vuldb.com/vuln/376135 vdb-entrytechnical-description
- https://vuldb.com/vuln/376135/cti signaturepermissions-required
- https://vuldb.com/cve/CVE-2026-14618 third-party-advisory
- https://vuldb.com/submit/844824 third-party-advisory
- https://github.com/open5gs/open5gs/issues/4517 exploitissue-tracking
- https://github.com/open5gs/open5gs/issues/4517#issuecomment-4589606265 issue-tracking
- https://github.com/ferrancanellas/open5gs/commit/fb5f67703de0213fb9c6e6ef3b48b6c1707e9503 broken-linkpatch
- https://github.com/open5gs/open5gs/ product
Full CVE JSON record (5.2)
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-14618",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-06T17:11:24.257381Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-06T17:11:44.913Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"
],
"modules": [
"AMF"
],
"product": "Open5GS",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "2.7.0"
},
{
"status": "affected",
"version": "2.7.1"
},
{
"status": "affected",
"version": "2.7.2"
},
{
"status": "affected",
"version": "2.7.3"
},
{
"status": "affected",
"version": "2.7.4"
},
{
"status": "affected",
"version": "2.7.5"
},
{
"status": "affected",
"version": "2.7.6"
},
{
"status": "affected",
"version": "2.7.7"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Nakyung Lee (Kookmin University ICSR Lab)"
},
{
"lang": "en",
"type": "finder",
"value": "Hwankuk Kim (Kookmin University ICSR Lab)"
},
{
"lang": "en",
"type": "reporter",
"value": "insengen (VulDB User)"
},
{
"lang": "en",
"type": "analyst",
"value": "insengen (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability was detected in Open5GS up to 2.7.7. Affected by this vulnerability is the function amf_nnrf_handle_nf_discover of the file src/amf/nnrf-handler.c of the component AMF. The manipulation results in denial of service. The attack may be launched remotely. The exploit is now public and may be used. The patch is identified as fb5f67703de0213fb9c6e6ef3b48b6c1707e9503. It is best practice to apply a patch to resolve this issue."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 4,
"vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-404",
"description": "Denial of Service",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T09:03:41.814Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-376135 | Open5GS AMF nnrf-handler.c amf_nnrf_handle_nf_discover denial of service",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/376135"
},
{
"name": "VDB-376135 | CTI Indicators (IOB, IOC, TTP, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/376135/cti"
},
{
"name": "CVE-2026-14618 | CVE Analysis and Report",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/cve/CVE-2026-14618"
},
{
"name": "Submit #844824 | Open5GS 2.7.7 Denial of Service",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/844824"
},
{
"tags": [
"exploit",
"issue-tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4517"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4517#issuecomment-4589606265"
},
{
"tags": [
"broken-link",
"patch"
],
"url": "https://github.com/ferrancanellas/open5gs/commit/fb5f67703de0213fb9c6e6ef3b48b6c1707e9503"
},
{
"tags": [
"product"
],
"url": "https://github.com/open5gs/open5gs/"
}
],
"tags": [
"x_open-source"
],
"timeline": [
{
"lang": "en",
"time": "2026-07-03T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-07-03T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-10-21T11:05:31.000Z",
"value": "VulDB entry last update"
}
],
"title": "Open5GS AMF nnrf-handler.c amf_nnrf_handle_nf_discover denial of service",
"x_generator": [
"VulDB PVTS v202610"
]
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-14618",
"datePublished": "2026-07-04T06:00:09.970Z",
"dateReserved": "2026-07-03T16:36:17.574Z",
"dateUpdated": "2026-10-21T09:03:41.814Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}