CVE-2023-22036Network attack vector

Service interruption via infinite ZIP parsing loop

Published Jul 18, 2023 · Updated May 28, 2026

Infinite loop in the Utility component of Oracle Java SE 11.0.19, 17.0.7, and 20.0.1 allows remote attackers to interrupt service. The java.util.zip.ZipFile parser and ZIP FileSystem provider insufficiently validate attacker-controlled ZIP64 extra fields, allowing malformed ZIP data to trap parsing in an infinite loop. Reachability requires an application or sandboxed client to pass untrusted ZIP content into the affected APIs; the reported consequence is partial denial of service only.

CVSS severity3.7
Low
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Infinite loop in the Utility component of Oracle Java SE 11.0.19, 17.0.7, and 20.0.1 allows remote attackers to interrupt service. The java.util.zip.ZipFile parser and ZIP FileSystem provider insufficiently validate attacker-controlled ZIP64 extra fields, allowing malformed ZIP data to trap parsing in an infinite loop. Reachability requires an application or sandboxed client to pass untrusted ZIP content into the affected APIs; the reported consequence is partial denial of service only.

The record

CVE
CVE-2023-22036
Published
Jul 18, 2023
Updated
May 28, 2026
Vendor
Oracle Corporation
Product
Java Platform, Standard Edition (Java SE)
Classifications
CWE-835, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 18, 2023CVE publishedPublication date reported by the CVE source.
  2. May 28, 2026Record 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=Oracle GraalVM Enterprise Edition:20.3.10
  2. Affected versionversion=Oracle GraalVM Enterprise Edition:21.3.6
  3. Affected versionversion=Oracle GraalVM Enterprise Edition:22.3.2
  4. Affected versionversion=Oracle GraalVM for JDK:17.0.7
  5. Affected versionversion=Oracle GraalVM for JDK:20.0.1
  6. Affected versionversion=Oracle Java SE:11.0.19
  7. Affected versionversion=Oracle Java SE:17.0.7
  8. Affected versionversion=Oracle Java SE:20.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Java Platform, Standard Edition (Java SE)version=Oracle GraalVM Enterprise Edition:20.3.10; version=Oracle GraalVM Enterprise Edition:21.3.6; version=Oracle GraalVM Enterprise Edition:22.3.2; version=Oracle GraalVM for JDK:17.0.7; version=Oracle GraalVM for JDK:20.0.1; version=Oracle Java SE:11.0.19; version=Oracle Java SE:17.0.7; version=Oracle Java SE:20.0.1

Published CVSS scores

3.7Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
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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