CVE-2020-4901

Information disclosure and service interruption via username enumeration

Published May 7, 2021 · Updated Sep 17, 2024

Username enumeration in IBM Robotic Process Automation with Automation Anywhere 11.0 allows remote attackers to obtain sensitive information. IBM identifies username enumeration as the cause but does not disclose the affected endpoint or the response difference used to distinguish valid accounts. The interface is reachable without authentication from an adjacent network, and repeated requests can interrupt service without changing data.

CVSS severity5.4
Medium
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Username enumeration in IBM Robotic Process Automation with Automation Anywhere 11.0 allows remote attackers to obtain sensitive information. IBM identifies username enumeration as the cause but does not disclose the affected endpoint or the response difference used to distinguish valid accounts. The interface is reachable without authentication from an adjacent network, and repeated requests can interrupt service without changing data.

The record

CVE
CVE-2020-4901
Published
May 7, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
IBM Robotic Process Automation with Automation Anywhere
Classifications
T1087
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=11.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

IBM · IBM Robotic Process Automation with Automation Anywhereversion=11.0

Published CVSS scores

5.4IBM CorporationCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:P

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1087Account Discovery

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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