CVE-2021-2189Network attack vector

Unauthenticated service hang or repeated crash

Published Apr 22, 2021 · Updated Sep 26, 2024

Denial of service in Oracle Sales Offline 12.1.1 through 12.1.3 and 12.2.3 through 12.2.10 allows remote attackers to cause a hang or repeated crash. Oracle identifies the vulnerable locus only as the Template component and has not disclosed the malformed request or processing error that exhausts resources. The affected HTTP interface is reachable without credentials, and successful exploitation interrupts availability without reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability14.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Oracle Sales Offline 12.1.1 through 12.1.3 and 12.2.3 through 12.2.10 allows remote attackers to cause a hang or repeated crash. Oracle identifies the vulnerable locus only as the Template component and has not disclosed the malformed request or processing error that exhausts resources. The affected HTTP interface is reachable without credentials, and successful exploitation interrupts availability without reported data disclosure or modification.

The record

CVE
CVE-2021-2189
Published
Apr 22, 2021
Updated
Sep 26, 2024
Vendor
Oracle
Product
Oracle Sales Offline
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 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

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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
  2. Affected versionversion=12.2.3-12.2.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Oracle Sales Offlineversion=12.1.1-12.1.3; version=12.2.3-12.2.10

Published CVSS scores

7.5OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

T1499Endpoint Denial of Service

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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