{"id":"EM-20261105-VQLB","url":"https://cyber.eventmonitor.net/incident/EM-20261105-VQLB/asn1scc-vulnerability-cve-2026-76077/","type":"cve","title":"ASN1SCC Vulnerability (CVE-2026-76077)","subtitle":"CVE-2026-76077","subject":"CVE-2026-76077","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-05T17:18:20.830Z","firstSignal":"2026-11-05T16:49:58.000Z","lastSignal":"2026-11-05T17:18:20.830Z","updated":"2026-11-06T12:16:45.734Z","revision":1,"life":[{"status":"Born","at":"2026-11-05T17:18:20.830Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-05T17:18:20.830Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-05T16:49:58.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-05T17:18:20.830Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261105-VQLB created."}],"stages":[{"name":"Disclosed","at":"2026-11-05T17:18:20.830Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-05T17:18:20.830Z","detail":"CVSS 8.1"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-05T16:49:58.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-05T16:49:58.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-76077 (important)","text":"asn1scc: asn1scc: Arbitrary code execution via buffer overflow in XER tokenizer","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-76077.json"},{"at":"2026-11-05T17:18:20.830Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-76077 (CVSS 8.1)","text":"ASN1SCC is an open source ASN.1 compiler for embedded systems. Prior to 4.7.0.1, the XER tokenizer NT() in asn1crt/asn1crt_encoding_xer.c, which is reached by all XER decode paths, copies tag characters into a fixed char Value[100] field without a length bound and reads input and lookahead bytes without checking the buffer count. A crafted XER message with an overlong tag can overwrite the tokenizer's stack frame, while a truncated tag or unterminated processing-instruction or comment sequence can read beyond the input and may cause a CPU spin. The flaws can disclose adjacent memory, corrupt…","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76077"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-05T17:18:20.830","score":8.1,"severity":"HIGH","desc":"ASN1SCC is an open source ASN.1 compiler for embedded systems. Prior to 4.7.0.1, the XER tokenizer NT() in asn1crt/asn1crt_encoding_xer.c, which is reached by all XER decode paths, copies tag characters into a fixed char Value[100] field without a length bound and reads input and lookahead bytes…","product":"","seen":1793909142558},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}