CVE-2020-4958Network attack vector

Unauthenticated access via exposed RMI connectors

Published Jan 21, 2021 · Updated Sep 17, 2024

Authentication bypass in IBM Security Identity Governance and Intelligence 5.2.6 allows remote attackers to invoke privileged RMI functions. The virtual appliance's RMI connectors accept calls without authenticating a provable user identity before invoking identity-dependent or resource-intensive functionality. No credentials or user interaction are required, but IBM has not publicly identified the callable operations or their specific consequences.

CVSS severity7.4
High
EPSS probability1.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in IBM Security Identity Governance and Intelligence 5.2.6 allows remote attackers to invoke privileged RMI functions. The virtual appliance's RMI connectors accept calls without authenticating a provable user identity before invoking identity-dependent or resource-intensive functionality. No credentials or user interaction are required, but IBM has not publicly identified the callable operations or their specific consequences.

The record

CVE
CVE-2020-4958
Published
Jan 21, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
IBM Security Identity Governance and Intelligence
Classifications
CWE-306, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 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=5.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Security Identity Governance and Intelligenceversion=5.2.6

Published CVSS scores

7.4IBM CorporationCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
7.5NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST National Vulnerability DatabaseCVSS: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 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

CWE-306Missing Authentication for Critical Function
T1210Exploitation of Remote Services

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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