{"id":"CVE-2026-43988","state":"PUBLISHED","title":"Vanetza: Remote Denial of Service via Uncaught Exception in ASN.1/OER Parsing","description":"Vanetza is an open-source implementation of the ETSI C-ITS protocol suite. In 26.02 and earlier, a denial-of-service vulnerability was identified in the ASN.1/OER parsing pipeline of Vanetza. When processing malformed network packets containing corrupted ASN.1/OER structures (e.g., invalid length fields or malformed certificate encoding), the ASN.1 wrapper (asn1c_wrapper.cpp) raises a std::runtime_error. This exception is not caught at the parsing boundary and propagates to std::terminate, resulting in process termination. This vulnerability is fixed with commit 62dfe58a8342512b6e1947d75821402ada524f1a.","publishedAt":"2026-05-26T21:17:23.568Z","updatedAt":"2026-05-27T18:36:29.364Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["riebl vanetza"],"affected":[{"vendor":"riebl","product":"vanetza","versions":[{"version":"< 62dfe58a8342512b6e1947d75821402ada524f1a","status":"affected"},{"version":"<= 26.02","status":"affected"}]}],"references":["https://github.com/riebl/vanetza/security/advisories/GHSA-j6cj-rp87-mfrx","https://github.com/riebl/vanetza/commit/62dfe58a8342512b6e1947d75821402ada524f1a"],"weaknesses":["CWE-248"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43988.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43988","state":"PUBLISHED","datePublished":"2026-05-26T21:17:23.568Z","dateUpdated":"2026-05-27T18:36:29.364Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-04T20:24:31.916Z"},"containers":{"cna":{"title":"Vanetza: Remote Denial of Service via Uncaught Exception in ASN.1/OER Parsing","descriptions":[{"lang":"en","value":"Vanetza is an open-source implementation of the ETSI C-ITS protocol suite. In 26.02 and earlier, a denial-of-service vulnerability was identified in the ASN.1/OER parsing pipeline of Vanetza. When processing malformed network packets containing corrupted ASN.1/OER structures (e.g., invalid length fields or malformed certificate encoding), the ASN.1 wrapper (asn1c_wrapper.cpp) raises a std::runtime_error. This exception is not caught at the parsing boundary and propagates to std::terminate, resulting in process termination. This vulnerability is fixed with commit 62dfe58a8342512b6e1947d75821402ada524f1a."}],"affected":[{"vendor":"riebl","product":"vanetza","versions":[{"version":"< 62dfe58a8342512b6e1947d75821402ada524f1a","status":"affected"},{"version":"<= 26.02","status":"affected"}]}],"references":[{"url":"https://github.com/riebl/vanetza/security/advisories/GHSA-j6cj-rp87-mfrx","name":"https://github.com/riebl/vanetza/security/advisories/GHSA-j6cj-rp87-mfrx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/riebl/vanetza/commit/62dfe58a8342512b6e1947d75821402ada524f1a","name":"https://github.com/riebl/vanetza/commit/62dfe58a8342512b6e1947d75821402ada524f1a","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-248","lang":"en","description":"CWE-248: Uncaught Exception","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-26T21:17:23.568Z"},"source":{"advisory":"GHSA-j6cj-rp87-mfrx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/riebl/vanetza/security/advisories/GHSA-j6cj-rp87-mfrx","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T13:03:22.385833Z","id":"CVE-2026-43988","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T18:36:29.364Z"}}]}}}