CVE-2021-20380Network attack vector

Unauthenticated disclosure of sensitive HTTP request data

Published Jun 3, 2021 · Updated Sep 16, 2024

Information exposure in IBM QRadar Advisor with Watson 1.1 through 2.5 allows remote attackers to read sensitive HTTP request data. IBM has not published the affected endpoint, exposed fields, or the operation that mishandles HTTP requests. No authentication or user interaction is required; the disclosed data can assist further attacks, but IBM reports no direct integrity or availability impact.

CVSS severity5.3
Medium
EPSS probability1.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in IBM QRadar Advisor with Watson 1.1 through 2.5 allows remote attackers to read sensitive HTTP request data. IBM has not published the affected endpoint, exposed fields, or the operation that mishandles HTTP requests. No authentication or user interaction is required; the disclosed data can assist further attacks, but IBM reports no direct integrity or availability impact.

The record

CVE
CVE-2021-20380
Published
Jun 3, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
QRadar Advisor with Watson
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 3, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=1.1
  2. Affected versionversion=2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · QRadar Advisor with Watsonversion=1.1; version=2.5

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.3IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 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

No sourced classifications are available.

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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