CVE-2021-20252Network attack vector

Authenticated service interruption via oversized date ranges

Published Feb 23, 2021 · Updated Aug 3, 2024

Improper input validation in Red Hat 3scale API Management Platform 2 allows remote authenticated users to interrupt service. The 3scale backend accepts user-requested date ranges in certain database queries without preventive bounds handling. A sufficiently large range eventually produces an internal server error, affecting availability without reported data exposure or modification.

CVSS severity6.5
Medium
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Red Hat 3scale API Management Platform 2 allows remote authenticated users to interrupt service. The 3scale backend accepts user-requested date ranges in certain database queries without preventive bounds handling. A sufficiently large range eventually produces an internal server error, affecting availability without reported data exposure or modification.

The record

CVE
CVE-2021-20252
Published
Feb 23, 2021
Updated
Aug 3, 2024
Vendor
Red Hat
Product
Red Hat 3scale API Management
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=As shipped by Red Hat 3scale API Management Platform 2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Red Hat · Red Hat 3scale API Managementversion=As shipped by Red Hat 3scale API Management Platform 2

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:C

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 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

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

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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