CVE-2020-2823Network attack vector

Unauthenticated data access and modification

Published Apr 15, 2020 · Updated Sep 27, 2024

Unspecified vulnerability in Notes in Oracle Common Applications Calendar 12.1.1 through 12.1.3 allows remote attackers to read and alter data. Oracle has not published the vulnerable Notes operation or how an HTTP request mishandles untrusted input. Requests require no authentication, but successful exploitation requires another person's interaction and permits access to critical or all accessible data plus modification of some data.

CVSS severity8.2
High
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unspecified vulnerability in Notes in Oracle Common Applications Calendar 12.1.1 through 12.1.3 allows remote attackers to read and alter data. Oracle has not published the vulnerable Notes operation or how an HTTP request mishandles untrusted input. Requests require no authentication, but successful exploitation requires another person's interaction and permits access to critical or all accessible data plus modification of some data.

The record

CVE
CVE-2020-2823
Published
Apr 15, 2020
Updated
Sep 27, 2024
Vendor
Oracle Corporation
Product
Oracle Common Applications Calendar
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 27, 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=12.1.1-12.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle Common Applications Calendarversion=12.1.1-12.1.3

Published CVSS scores

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N
8.2Oracle CorporationCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
8.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/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

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Technologies

Your stack

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Your stack

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