VULNERABILITY INTELLIGENCE

CVE-2021-22569

CVSS score7.5 HIGH
EPSS probability1.80%
CISA KEVNot currently listed
Published2022-01-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.

Weakness classification

  • cve-coordination@google.com: CWE-696
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references