{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-15687", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-08-09T17:50:46.986Z", "datePublished": "2026-08-12T02:45:10.502Z", "dateUpdated": "2026-08-12T02:45:10.502Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-08-12T02:45:10.502Z"}, "title": "Open5GS SMF Diameter Gx Credit-Control-Answer smf_gx_cca_cb denial of service", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-404", "lang": "en", "description": "Denial of Service"}]}], "affected": [{"vendor": "n/a", "product": "Open5GS", "versions": [{"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", "status": "unaffected"}], "cpes": ["cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"], "modules": ["SMF Diameter Gx Credit-Control-Answer Handler"]}], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in Open5GS up to 2.7.6. Impacted is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.7.7 is recommended to address this issue. The patch is identified as f23d7a5e959acd8f37b925dc29b85f26b7d391cb. Upgrading the affected component is advised."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 4.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 4.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 4, "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}], "timeline": [{"time": "2026-08-09T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-08-09T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-08-09T19:55:54.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "WeiYi (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/387283", "name": "VDB-387283 | Open5GS SMF Diameter Gx Credit-Control-Answer smf_gx_cca_cb denial of service", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/387283/cti", "name": "VDB-387283 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2025-15687", "name": "CVE-2025-15687 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/867119", "name": "Submit #867119 | Open5GS v2.7.5 Denial of Service", "tags": ["third-party-advisory"]}, {"url": "https://github.com/open5gs/open5gs/issues/4027", "tags": ["issue-tracking"]}, {"url": "https://github.com/open5gs/open5gs/pull/4034", "tags": ["issue-tracking", "patch"]}, {"url": "https://github.com/user-attachments/files/21515527/SMF.crashes.zip", "tags": ["exploit"]}, {"url": "https://github.com/open5gs/open5gs/commit/f23d7a5e959acd8f37b925dc29b85f26b7d391cb", "tags": ["patch"]}, {"url": "https://github.com/open5gs/open5gs/releases/tag/v2.7.7", "tags": ["patch"]}, {"url": "https://github.com/open5gs/open5gs/", "tags": ["product"]}], "tags": ["x_open-source"], "x_generator": ["VulDB PVTS v202608"]}}}

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"], "modules": ["SMF Diameter Gx Credit-Control-Answer 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"}, {"status": "unaffected", "version": "2.7.7"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in Open5GS up to 2.7.6. Impacted is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.7.7 is recommended to address this issue. The patch is identified as f23d7a5e959acd8f37b925dc29b85f26b7d391cb. Upgrading the affected component is advised."}], "id": "CVE-2025-15687", "lastModified": "2026-08-12T04:17:38.617", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 4.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "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": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.1, "baseSeverity": "LOW", "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": "LOW", "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:L/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"}]}, "published": "2026-08-12T04:17:38.617", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/open5gs/open5gs/"}, {"source": "cna@vuldb.com", "url": "https://github.com/open5gs/open5gs/commit/f23d7a5e959acd8f37b925dc29b85f26b7d391cb"}, {"source": "cna@vuldb.com", "url": "https://github.com/open5gs/open5gs/issues/4027"}, {"source": "cna@vuldb.com", "url": "https://github.com/open5gs/open5gs/pull/4034"}, {"source": "cna@vuldb.com", "url": "https://github.com/open5gs/open5gs/releases/tag/v2.7.7"}, {"source": "cna@vuldb.com", "url": "https://github.com/user-attachments/files/21515527/SMF.crashes.zip"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2025-15687"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/867119"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/387283"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/387283/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-404"}], "source": "cna@vuldb.com", "type": "Primary"}]}

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