CVE-2020-4427Known exploitationPublic exploitNetwork attack vector

Administrative access via attacker-chosen SAML session

Published May 7, 2020 · Updated Nov 3, 2025

Authentication bypass in IBM Data Risk Manager 2.0.6.1 and earlier allows remote attackers to gain full administrative access. The SAML idpSelection endpoint accepts an attacker-chosen session ID and administrator username, and /albatross/user/login returns a new administrator password for that session. The path is reachable without credentials only when SAML authentication is enabled, a setting IBM states is disabled by default.

CVSS severity9.0
Critical
EPSS probability70.03%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in IBM Data Risk Manager 2.0.6.1 and earlier allows remote attackers to gain full administrative access. The SAML idpSelection endpoint accepts an attacker-chosen session ID and administrator username, and /albatross/user/login returns a new administrator password for that session. The path is reachable without credentials only when SAML authentication is enabled, a setting IBM states is disabled by default.

The record

CVE
CVE-2020-4427
Published
May 7, 2020
Updated
Nov 3, 2025
Vendor
IBM
Product
IBM Data Risk Manager
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0.1
  2. Affected versionversion=2.0.2
  3. Affected versionversion=2.0.3
  4. Affected versionversion=2.0.4
  5. Affected versionversion=2.0.5
  6. Affected versionversion=2.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Data Risk Managerversion=2.0.1; version=2.0.2; version=2.0.3; version=2.0.4; version=2.0.5; version=2.0.6

Published CVSS scores

9.0IBM CorporationCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 IPsShadowserver observations through Sep 16, 2026. Gaps indicate unavailable data.
Sep 10, 2026Sep 16, 2026
View daily counts
Reporting dayUnique IPs
Sep 10, 2026Unavailable
Sep 11, 2026Unavailable
Sep 12, 2026Unavailable
Sep 13, 2026Unavailable
Sep 14, 20261
Sep 15, 2026Unavailable
Sep 16, 20262
Latest reporting daySep 16, 2026
Latest daily unique IPs2
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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