CVE-2021-2477Network attack vector

Unauthenticated partial service interruption

Published Oct 20, 2021 · Updated Sep 25, 2024

Session Management denial of service in Oracle Applications Framework 12.1.3 and 12.2.3 through 12.2.10 allows remote attackers to interrupt service. Oracle identifies the affected locus only as Session Management and has not published the defective operation performed on untrusted HTTP input. No authentication or user interaction is required, and the reported consequence is limited to a partial interruption of framework availability.

CVSS severity5.3
Medium
EPSS probability1.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session Management denial of service in Oracle Applications Framework 12.1.3 and 12.2.3 through 12.2.10 allows remote attackers to interrupt service. Oracle identifies the affected locus only as Session Management and has not published the defective operation performed on untrusted HTTP input. No authentication or user interaction is required, and the reported consequence is limited to a partial interruption of framework availability.

The record

CVE
CVE-2021-2477
Published
Oct 20, 2021
Updated
Sep 25, 2024
Vendor
Oracle
Product
Oracle Applications Framework
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=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 Applications Frameworkversion=12.1.3; version=12.2.3-12.2.10

Published CVSS scores

5.3OracleCVSS:3.1/AV:N/AC:L/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 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

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

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Your stack

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