{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-22320", "assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c", "state": "PUBLISHED", "assignerShortName": "CERTVDE", "dateReserved": "2026-01-07T11:49:15.178Z", "datePublished": "2026-03-18T07:34:23.026Z", "dateUpdated": "2026-03-18T07:34:23.026Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "FL SWITCH 2005", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2008", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2016", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL 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"vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2414-2SFX PN", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2416", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2416 PN", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2504-2GC-2SFP", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2506-2SFP", 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"Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2708", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2708 PN", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 2303-8SP1", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL NAT 2008", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL NAT 2208", "vendor": "Phoenix Contact", 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"versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH TSN 2316", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH TSN 2312-2GC-2SFP", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH TSN 2314-2SFP", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 5924-4GC", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 5916-8GC-4SFP+", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 5924SFP-4GC", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 5924-4SFP+", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "FL SWITCH 5916SFP-8GC-4SFP+", "vendor": "Phoenix Contact", "versions": [{"lessThan": "3.53", "status": "affected", "version": "0.0.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "Gabriele Quagliarella from Nozomi Networks"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "A stack-based buffer overflow in the CLI's TFTP file\u2011transfer command handling allows a low-privileged attacker with Telnet/SSH access to trigger memory corruption by supplying unexpected or oversized filename input. Exploitation results in the corruption of the internal buffer, causing the CLI and web dashboard to become unavailable and leading to a denial of service.<br>"}], "value": "A stack-based buffer overflow in the CLI's TFTP file\u2011transfer command handling allows a low-privileged attacker with Telnet/SSH access to trigger memory corruption by supplying unexpected or oversized filename input. Exploitation results in the corruption of the internal buffer, causing the CLI and web dashboard to become unavailable and leading to a denial of service."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "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:H", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-121", "description": "CWE-121 Stack-based Buffer Overflow", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c", "shortName": "CERTVDE", "dateUpdated": "2026-03-18T07:34:23.026Z"}, "references": [{"url": "https://certvde.com/de/advisories/VDE-2025-104"}], "source": {"advisory": "VDE-2025-104", "defect": ["CERT@VDE#641898"], "discovery": "UNKNOWN"}, "title": "Stack-Based Buffer Overflow in TFTP File-Transfer Command Handling over CLI", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}}}
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