{"affected":[{"defaultStatus":"unaffected","product":"PLCnext Engineer","source":"CNA: CERTVDE","vendor":"Phoenix Contact","versions":[{"lessThan":"2026.6","status":"affected","version":"0.0","versionType":"semver"}]}],"cveId":"CVE-2026-110021","cwes":["CWE-347"],"description":"PLCnext Engineer checks GSDX manifest reference digests but does not cryptographically verify the XML `SignatureValue` over canonicalized `SignedInfo`. An unauthenticated local attacker can modify signed GSDML content, update its manifest digest, retain the public certificate data, and leave an invalid nonempty `SignatureValue`. PLCnext Engineer prior to 2026.6 reports the package as `Valid` and selects the modified device description for import under the default policy.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.9,"severity":"medium","source":"CNA: CERTVDE","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.2,"severity":"medium","source":"CNA: CERTVDE","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},{"score":6.9,"severity":"medium","source":"NVD: info@cert.vde.com","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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"},{"score":6.2,"severity":"medium","source":"NVD: info@cert.vde.com","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}],"modifiedAt":1793787444310,"publishedAt":1793783971248,"references":[{"source":"CNA: CERTVDE","tags":[],"url":"https://www.certvde.com/en/advisories/VDE-2026-121/"},{"source":"info@cert.vde.com","tags":[],"url":"https://www.certvde.com/en/advisories/VDE-2026-121/"}],"remediation":[],"revision":"7476c704fc9a750011a1f44b702f17ca79ae8c46c12f21a40ba1fa60ab132eea","sources":[{"modifiedAt":1793783971248,"name":"CNA: CERTVDE","retrievedAt":1793786904450,"url":"https://www.cve.org/CVERecord?id=CVE-2026-110021"},{"modifiedAt":1793787444310,"name":"NVD","retrievedAt":1793794563789,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110021"}],"ssvc":null,"status":"published","title":"Missing GSDX SignatureValue verification","updatedAt":1793794563789}