CVE-2026-30897

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"cveTags": [], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow a remote authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests."}, {"lang": "es", "value": "Una vulnerabilidad de desbordamiento de b\u00fafer basado en pila en Fortinet FortiWeb 8.0.0 hasta 8.0.3, FortiWeb 7.6.0 hasta 7.6.6, FortiWeb 7.4.0 hasta 7.4.11, FortiWeb 7.2 todas las versiones, FortiWeb 7.0 todas las versiones puede permitir a un atacante remoto autenticado que puede eludir la protecci\u00f3n de pila y ASLR ejecutar c\u00f3digo o comandos arbitrarios mediante solicitudes HTTP manipuladas."}], "id": "CVE-2026-30897", "lastModified": "2026-11-06T16:18:01.777", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 5.9, "source": "psirt@fortinet.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-30897", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-10T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-03-10T18:18:51.227", "references": [{"source": "psirt@fortinet.com", "tags": ["Vendor Advisory"], "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-093"}], "sourceIdentifier": "psirt@fortinet.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "psirt@fortinet.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.0.3]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.6.0,7.6.6]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.4.0,7.4.11]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.2.0,7.2.12]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.0,7.0.12]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "FortiWeb", "source": "cna", "vendor": "Fortinet"}, "product": "fortiweb", "vendor": "fortinet"}], "analysis": {"en": {"generated_at": "2026-04-16T09:46:01.821545+00:00", "value": {"mitigation_remediation": ["Apply FortiWeb upgrade to version 8.0.4 or newer (or 7.6.7 or newer, or 7.4.12 or newer, depending on current major release) to eliminate the stack overflow flaw", "Configure network or firewall policies to restrict exposed management and application interfaces to trusted networks only, limiting the window for authenticated attackers", "Implement traffic inspection or application protection rules that flag or block malformed HTTP requests to reduce the chance of successful payload delivery"], "summary": {"action": "Patch Immediately", "impact": "Remote Code Execution via stack-based buffer overflow"}, "threat_synthesis": {"affected_systems": "Fortinet FortiWeb versions 8.0.0 through 8.0.3, 7.6.0 through 7.6.6, 7.4.0 through 7.4.11, all 7.2 releases, and all 7.0 releases are vulnerable. Any FortiWeb deployment within these version ranges is at risk unless already patched to the newer releases.", "description_and_impact": "A stack-based buffer overflow flaw allows an attacker who can authenticate and bypass stack protection and address space layout randomization to gain arbitrary code execution on FortiWeb devices. The vulnerability is a classic buffer overflow (CWE\u2011121) and can lead to full system compromise if exploited. The impact can affect confidentiality, integrity, and availability of the protected resources running on the web application firewall.", "risk_and_exploitability": "The CVSS score of 5.9 indicates moderate severity. The EPSS score of less than 1% suggests that widespread exploitation is unlikely at this time, and the vulnerability is not listed in CISA\u2019s KEV catalog. Based on the description, the likely attack vector is a remote, authenticated attacker transmitting crafted HTTP requests. The requirement to bypass stack protection and ASLR reduces immediate exploitation difficulty compared to unmitigated buffer overflows, but once bypassed, the attacker can execute arbitrary code. Given the moderate score and low exploit probability, organizations should promptly apply the vendor\u2011issued patches to mitigate the risk."}}}}, "created": "2026-03-11T11:49:38.733116+00:00", "title": "Stack-Based Buffer Overflow Enabling Remote Code Execution on FortiWeb", "updated": "2026-04-16T10:00:14.054023+00:00", "vendors": ["fortinet", "fortinet$PRODUCT$fortiweb"]}