{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-75615","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-17T23:49:03.451Z","datePublished":"2026-11-05T16:49:20.422Z","dateUpdated":"2026-11-05T16:49:20.422Z"},"containers":{"cna":{"title":"ASN1SCC: Out-of-bounds read via unvalidated character index in ASN.1 string decoders","problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"CWE-125: Out-of-bounds Read","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-129","lang":"en","description":"CWE-129: Improper Validation of Array Index","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/esa/asn1scc/security/advisories/GHSA-234q-m7gr-pcf8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/esa/asn1scc/security/advisories/GHSA-234q-m7gr-pcf8"},{"name":"https://github.com/esa/asn1scc/commit/fe6ab763bc60d8a2def4104c15414809b45fffd9","tags":["x_refsource_MISC"],"url":"https://github.com/esa/asn1scc/commit/fe6ab763bc60d8a2def4104c15414809b45fffd9"},{"name":"https://github.com/esa/asn1scc/releases/tag/4.7.0.1","tags":["x_refsource_MISC"],"url":"https://github.com/esa/asn1scc/releases/tag/4.7.0.1"}],"affected":[{"vendor":"esa","product":"asn1scc","versions":[{"version":"< 4.7.0.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-05T16:49:20.422Z"},"descriptions":[{"lang":"en","value":"ASN1SCC is an open source ASN.1 compiler for embedded systems. Prior to 4.7.0.1, the ACN runtime function Acn_Dec_String_CharIndex_private in asn1crt/asn1crt_encoding_acn.c and the generated uPER decoder InternalItem_string_with_alpha_decode in StgC/uper_c.stg do not validate a decoded character index before reading allowedCharSet. For string alphabets whose size is not a power of two, a crafted message can select an unused encoded index, read a small bounded window of adjacent static program constants, and return the byte as a successfully decoded character. The full 128-character IA5String alphabet is not affected. This issue is fixed in version 4.7.0.1."}],"source":{"advisory":"GHSA-234q-m7gr-pcf8","discovery":"UNKNOWN"}}}}