CVE-2020-2654Network attack vector

Service interruption via X.509 OID interning

Published Jan 15, 2020 · Updated Sep 30, 2024

Resource exhaustion in Oracle Java SE 7u241, 8u231, 11.0.5, and 13.0.1 allows remote attackers to interrupt Java services. The certificate parser interns Object Identifier values from attacker-controlled X.509 certificates, causing excessive memory use as distinct OIDs accumulate. Exploitation requires a service to pass attacker-supplied certificate data to Libraries APIs; it interrupts availability without reading or altering data.

CVSS severity3.7
Low
EPSS probability3.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Oracle Java SE 7u241, 8u231, 11.0.5, and 13.0.1 allows remote attackers to interrupt Java services. The certificate parser interns Object Identifier values from attacker-controlled X.509 certificates, causing excessive memory use as distinct OIDs accumulate. Exploitation requires a service to pass attacker-supplied certificate data to Libraries APIs; it interrupts availability without reading or altering data.

The record

CVE
CVE-2020-2654
Published
Jan 15, 2020
Updated
Sep 30, 2024
Vendor
Oracle Corporation
Product
Java Platform, Standard Edition (Java SE)
Classifications
T1499.004
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?

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  1. Affected versionversion=Java SE: 7u241, 8u231, 11.0.5, 13.0.1

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

Published CVSS scores

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

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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

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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