CVE-2020-2590Network attack vector

Unauthenticated modification of accessible data

Published Jan 15, 2020 · Updated Sep 30, 2024

Security flaw in Oracle Java SE 7u241, 8u231, 11.0.5, and 13.0.1 allows remote attackers to modify accessible data via Kerberos. Oracle identifies the Security component and Kerberos protocol but has not published the faulty operation or input handling. Exploitation requires a sandboxed deployment that runs untrusted code or a service that passes attacker-controlled data to the affected APIs, and it permits unauthorized data changes.

CVSS severity3.7
Low
EPSS probability3.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Security flaw in Oracle Java SE 7u241, 8u231, 11.0.5, and 13.0.1 allows remote attackers to modify accessible data via Kerberos. Oracle identifies the Security component and Kerberos protocol but has not published the faulty operation or input handling. Exploitation requires a sandboxed deployment that runs untrusted code or a service that passes attacker-controlled data to the affected APIs, and it permits unauthorized data changes.

The record

CVE
CVE-2020-2590
Published
Jan 15, 2020
Updated
Sep 30, 2024
Vendor
Oracle Corporation
Product
Java Platform, Standard Edition (Java SE)
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 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=Java SE: 7u241, 8u231, 11.0.5, 13.0.1
  2. Affected versionversion=Java SE Embedded: 8u231

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Java Platform, Standard Edition (Java SE)version=Java SE: 7u241, 8u231, 11.0.5, 13.0.1; version=Java SE Embedded: 8u231

Published CVSS scores

3.7NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
3.7OracleCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N

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

No sourced classifications are available.

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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