CVE-2021-2104Network attack vector

Unauthenticated data disclosure and modification

Published Jan 20, 2021 · Updated Sep 26, 2024

Cross-site scripting in Oracle Complex Maintenance, Repair, and Overhaul 11.5.10, 12.1, and 12.2 allows remote attackers to read and alter data. Oracle identifies the Dialog Box component but has not disclosed the erroneous operation or the attacker-controlled input. Exploitation requires an unauthenticated HTTP request and interaction by another person; success exposes critical data and permits limited modification or deletion.

CVSS severity8.2
High
EPSS probability1.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site scripting in Oracle Complex Maintenance, Repair, and Overhaul 11.5.10, 12.1, and 12.2 allows remote attackers to read and alter data. Oracle identifies the Dialog Box component but has not disclosed the erroneous operation or the attacker-controlled input. Exploitation requires an unauthenticated HTTP request and interaction by another person; success exposes critical data and permits limited modification or deletion.

The record

CVE
CVE-2021-2104
Published
Jan 20, 2021
Updated
Sep 26, 2024
Vendor
Oracle
Product
Oracle Complex Maintenance, Repair, and Overhaul
Classifications
T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=11.5.10
  2. Affected versionversion=12.1
  3. Affected versionversion=12.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Oracle Complex Maintenance, Repair, and Overhaulversion=11.5.10; version=12.1; version=12.2

Published CVSS scores

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

T1204User Execution

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo