CVE-2022-33070

MEDIUM 5.5CVE-2022-33070 · Published 23/06/2022 · updated 08/10/2026

In short

CVE-2022-33070 is a MEDIUM (CVSS 5.5) vulnerability affecting protobuf-c (protobuf-c project).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 66.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
protobuf-c protobuf-c_project	`= 1.4.0`	No fix yet

Description

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.

References

protobuf-c/protobuf-c · Exploit
protobuf-c/protobuf-c#508 · Exploit
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFN2GHUEGTSHRD7J5PKQ5DRSJSEQ2IKN

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