CVE-2026-1737 (GCVE-0-2026-1737)
Vulnerability from cvelistv5 – Published: 2026-02-02 01:02 – Updated: 2026-02-23 09:12
VLAI
EPSS
VEX
Title
Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion
Summary
A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function sgwc_s5c_handle_create_bearer_request of the file /src/sgwc/s5c-handler.c of the component CreateBearerRequest Handler. Performing a manipulation results in reachable assertion. Remote exploitation of the attack is possible. The exploit is now public and may be used. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-02 16:13 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.343636 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.343636 | signaturepermissions-required |
| https://vuldb.com/?submit.741192 | third-party-advisory |
| https://github.com/open5gs/open5gs/issues/4271 | issue-tracking |
| https://github.com/open5gs/open5gs/issues/4271#ev… | issue-tracking |
| https://github.com/open5gs/open5gs/issues/4271#is… | exploitissue-tracking |
| https://github.com/open5gs/open5gs/ | product |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-1737",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-02T16:13:03.639482Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-02T16:13:17.641Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"
],
"modules": [
"CreateBearerRequest Handler"
],
"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"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "LinZiyu (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function sgwc_s5c_handle_create_bearer_request of the file /src/sgwc/s5c-handler.c of the component CreateBearerRequest Handler. Performing a manipulation results in reachable assertion. Remote exploitation of the attack is possible. The exploit is now public and may be used. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 5,
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-617",
"description": "Reachable Assertion",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-23T09:12:28.991Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-343636 | Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/?id.343636"
},
{
"name": "VDB-343636 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/?ctiid.343636"
},
{
"name": "Submit #741192 | Open5GS SGWC v2.7.6 Denial of Service",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/?submit.741192"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4271"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4271#event-21968630023"
},
{
"tags": [
"exploit",
"issue-tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4271#issue-3795147720"
},
{
"tags": [
"product"
],
"url": "https://github.com/open5gs/open5gs/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-02-01T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-02-01T01:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-02-02T03:28:46.000Z",
"value": "VulDB entry last update"
}
],
"title": "Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-1737",
"datePublished": "2026-02-02T01:02:07.274Z",
"dateReserved": "2026-02-01T07:44:41.406Z",
"dateUpdated": "2026-02-23T09:12:28.991Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-1737",
"date": "2026-10-14",
"epss": "0.00571",
"percentile": "0.45927"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"
],
"modules": [
"CreateBearerRequest Handler"
],
"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"
}
]
}
],
"source": "cna@vuldb.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9C77332A-BAA3-4FE7-A237-B87F175C6F48",
"versionEndIncluding": "2.7.6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function sgwc_s5c_handle_create_bearer_request of the file /src/sgwc/s5c-handler.c of the component CreateBearerRequest Handler. Performing a manipulation results in reachable assertion. Remote exploitation of the attack is possible. The exploit is now public and may be used. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed."
},
{
"lang": "es",
"value": "Una vulnerabilidad fue detectada en Open5GS hasta la versi\u00f3n 2.7.6. El elemento afectado es la funci\u00f3n sgwc_s5c_handle_create_bearer_request del archivo /src/sgwc/s5c-handler.c del componente CreateBearerRequest Handler. Realizar una manipulaci\u00f3n resulta en una aserci\u00f3n alcanzable. La explotaci\u00f3n remota del ataque es posible. El exploit ahora es p\u00fablico y puede ser utilizado. Para solucionar este problema, se recomienda desplegar un parche. El informe del problema est\u00e1 marcado como ya solucionado."
}
],
"id": "CVE-2026-1737",
"lastModified": "2026-06-17T10:16:25.553",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "cna@vuldb.com",
"type": "Secondary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "cna@vuldb.com",
"type": "Secondary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "PROOF_OF_CONCEPT",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "cna@vuldb.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-1737",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-02T16:13:03.639482Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-02-02T02:16:10.457",
"references": [
{
"source": "cna@vuldb.com",
"tags": [
"Product"
],
"url": "https://github.com/open5gs/open5gs/"
},
{
"source": "cna@vuldb.com",
"tags": [
"Exploit",
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://github.com/open5gs/open5gs/issues/4271"
},
{
"source": "cna@vuldb.com",
"tags": [
"Issue Tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4271#event-21968630023"
},
{
"source": "cna@vuldb.com",
"tags": [
"Exploit",
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://github.com/open5gs/open5gs/issues/4271#issue-3795147720"
},
{
"source": "cna@vuldb.com",
"tags": [
"Permissions Required",
"VDB Entry"
],
"url": "https://vuldb.com/?ctiid.343636"
},
{
"source": "cna@vuldb.com",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "https://vuldb.com/?id.343636"
},
{
"source": "cna@vuldb.com",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "https://vuldb.com/?submit.741192"
}
],
"sourceIdentifier": "cna@vuldb.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-617"
}
],
"source": "cna@vuldb.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-02-03T03:11:48+00:00",
"cve": "CVE-2026-1737",
"id": "CVE-2026-1737",
"initial_release_date": "2026-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1737.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-1737",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-02T16:13:03.639482Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-02T16:13:09.786Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"
],
"modules": [
"CreateBearerRequest Handler"
],
"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"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "LinZiyu (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function sgwc_s5c_handle_create_bearer_request of the file /src/sgwc/s5c-handler.c of the component CreateBearerRequest Handler. Performing a manipulation results in reachable assertion. Remote exploitation of the attack is possible. The exploit is now public and may be used. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 5,
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-617",
"description": "Reachable Assertion",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-23T09:12:28.991Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-343636 | Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/?id.343636"
},
{
"name": "VDB-343636 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/?ctiid.343636"
},
{
"name": "Submit #741192 | Open5GS SGWC v2.7.6 Denial of Service",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/?submit.741192"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4271"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4271#event-21968630023"
},
{
"tags": [
"exploit",
"issue-tracking"
],
"url": "https://github.com/open5gs/open5gs/issues/4271#issue-3795147720"
},
{
"tags": [
"product"
],
"url": "https://github.com/open5gs/open5gs/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-02-01T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-02-01T01:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-02-02T03:28:46.000Z",
"value": "VulDB entry last update"
}
],
"title": "Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-1737",
"datePublished": "2026-02-02T01:02:07.274Z",
"dateReserved": "2026-02-01T07:44:41.406Z",
"dateUpdated": "2026-02-23T09:12:28.991Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.