CVE-2022-35724Network attack vector

CPU exhaustion via endless reader loop

Published Aug 9, 2022 · Updated Aug 3, 2024

Infinite-loop denial of service in Apache Avro Rust SDK before 0.14.0 allows remote attackers to exhaust CPU via crafted data. The published advisory identifies the Rust data reader but does not disclose which parsing loop or input field prevents termination. Exploitation requires an application to pass attacker-controlled Avro data to the reader, pinning CPU and interrupting that application.

CVSS severity7.5
High
EPSS probability1.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Infinite-loop denial of service in Apache Avro Rust SDK before 0.14.0 allows remote attackers to exhaust CPU via crafted data. The published advisory identifies the Rust data reader but does not disclose which parsing loop or input field prevents termination. Exploitation requires an application to pass attacker-controlled Avro data to the reader, pinning CPU and interrupting that application.

The record

CVE
CVE-2022-35724
Published
Aug 9, 2022
Updated
Aug 3, 2024
Vendor
The Apache Software Foundation
Product
Apache Avro
Classifications
CWE-835, CWE-20, CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <0.14.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Avroversion=unspecified <0.14.0

Published CVSS scores

7.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
CWE-20Improper Input Validation
CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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