{"id":"CVE-2022-33070","title":"Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function parse_tag_and_wiretype in protobuf-c/protobuf-c.c","summary":"Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function parse_tag_and_wiretype in protobuf-c/protobuf-c.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via unspecified vectors.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","vendor":"protobuf-c_project","product":"protobuf-c","affected":["protobuf-c = 1.4.0","fedora = 36"],"published":"2022-06-23","updated":"2026-10-08","sourceUpdated":"2026-10-08T21:17:48.770","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-33070","references":[{"url":"https://github.com/protobuf-c/protobuf-c/issues/506","label":"cve@mitre.org"},{"url":"https://github.com/protobuf-c/protobuf-c/pull/508","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFN2GHUEGTSHRD7J5PKQ5DRSJSEQ2IKN/","label":"cve@mitre.org"},{"url":"https://github.com/protobuf-c/protobuf-c/issues/506","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/protobuf-c/protobuf-c/pull/508","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFN2GHUEGTSHRD7J5PKQ5DRSJSEQ2IKN/","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.01115,"epssPercentile":0.65024,"ingestedAt":"2026-10-08T22:11:53.753Z","slug":"CVE-2022-33070","body":"## Overview\n\nProtobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function parse_tag_and_wiretype in protobuf-c/protobuf-c.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via unspecified vectors.\n\n## Affected\n\n- `protobuf-c = 1.4.0`\n- `fedora = 36`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}