CVE-2026-27828

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{"affected": [{"affectedData": [{"product": "everest-core", "vendor": "EVerest", "versions": [{"status": "affected", "version": "< 2026.02.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linuxfoundation:everest:*:*:*:*:*:*:*:*", "matchCriteriaId": "EB167E67-6808-4F7B-9505-FFF0C02B288C", "versionEndExcluding": "2026.02.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "EVerest is an EV charging software stack. Prior to version 2026.02.0, ISO15118_chargerImpl::handle_session_setup uses v2g_ctx after it has been freed when ISO15118 initialization fails (e.g., no IPv6 link-local address). The EVSE process can be crashed remotely by an attacker with MQTT access who issues a session_setup command while v2g_ctx has been released. Version 2026.02.0 contains a patch."}, {"lang": "es", "value": "EVerest es una pila de software de carga de veh\u00edculos el\u00e9ctricos. Antes de la versi\u00f3n 2026.02.0, ISO15118_chargerImpl::handle_session_setup utiliza v2g_ctx despu\u00e9s de que ha sido liberado cuando la inicializaci\u00f3n de ISO15118 falla (p. ej., no hay direcci\u00f3n IPv6 link-local). El proceso EVSE puede ser colapsado remotamente por un atacante con acceso MQTT que emite un comando session_setup mientras v2g_ctx ha sido liberado. La versi\u00f3n 2026.02.0 contiene un parche."}], "id": "CVE-2026-27828", "lastModified": "2026-06-17T10:27:45.097", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "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:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "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:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-27828", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-27T14:43:31.476136Z", "version": "2.0.3"}}]}, "published": "2026-03-26T17:16:34.357", "references": [{"source": "security-advisories@github.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/EVerest/EVerest/security/advisories/GHSA-5g3v-qc79-qqwr"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2026.02.0)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "everest-core", "source": "cna", "vendor": "EVerest"}, "product": "everest-core", "vendor": "everest"}], "analysis": {"en": {"generated_at": "2026-03-31T16:26:17.935055+00:00", "value": {"mitigation_remediation": ["Upgrade EVerest to version\u202f2026.02.0 or later to eliminate the use\u2011after\u2011free bug.", "Restrict or secure MQTT broker access so that only trusted clients can issue session_setup commands.", "Monitor MQTT traffic for unusual session_setup activity and enforce stricter authentication if possible."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service (Crash)"}, "threat_synthesis": {"affected_systems": "The flaw affects the EVerest everest-core component of the EV charging software stack. All releases prior to version\u202f2026.02.0 are vulnerable, regardless of the host operating system on which the stack is deployed, typically Linux environments.", "description_and_impact": "A use\u2011after\u2011free condition occurs in EVerest\u2019s ISO15118_chargerImpl during session_setup handling when the v2g_ctx context is freed following a failed ISO15118 initialization, such as missing an IPv6 link\u2011local address. The freed pointer is later accessed, leading to an application crash. The vulnerability is categorized as CWE\u2011416 and allows an attacker to disrupt service by forcing the EVSE process to terminate.", "risk_and_exploitability": "The CVSS base score of 5.5 indicates medium severity, and the EPSS score below 1% suggests a low probability of exploitation. However, the attack vector is inferred to be remote over MQTT, meaning an adversary with MQTT access can issue a malicious session_setup command to trigger the crash. The vulnerability is not listed in CISA\u2019s KEV catalog, but the combination of remote reachability and a crash outcome represents a significant availability risk for impacted charging stations."}}}}, "created": "2026-03-27T08:33:49.333500+00:00", "updated": "2026-03-31T20:08:50.442377+00:00", "vendors": ["everest", "everest$PRODUCT$everest-core"]}