CVE-2022-21383Network attack vector

Authenticated service interruption via undisclosed Log flaw

Published Jan 19, 2022 · Updated Sep 24, 2024

Denial of service in the Log component of Oracle Enterprise Session Border Controller 8.4 and 9.0 allows remote authenticated users to interrupt service. Oracle has not published the nature of the Log component flaw or the crafted HTTP input that triggers the availability loss. Low-privileged HTTP access is required, and successful exploitation causes only a partial service interruption.

CVSS severity4.3
Medium
EPSS probability0.80%
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 the Log component of Oracle Enterprise Session Border Controller 8.4 and 9.0 allows remote authenticated users to interrupt service. Oracle has not published the nature of the Log component flaw or the crafted HTTP input that triggers the availability loss. Low-privileged HTTP access is required, and successful exploitation causes only a partial service interruption.

The record

CVE
CVE-2022-21383
Published
Jan 19, 2022
Updated
Sep 24, 2024
Vendor
Oracle Corporation
Product
Oracle Enterprise Session Border Controller
Classifications
T1499, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=8.4
  2. Affected versionversion=9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle Corporation · Oracle Enterprise Session Border Controllerversion=8.4; version=9.0

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:P
4.3Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service
T1190Exploit Public-Facing Application

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

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Your stack

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