CVE-2020-4790

Service interruption via improperly validated signup URL

Published Feb 9, 2021 · Updated Sep 16, 2024

Denial of service in IBM Security Identity Governance and Intelligence 5.2.6 allows remote attackers to make the application unusable. The Security Access Request apps improperly validate a supplied URL in signup data, allowing malformed input to interrupt application availability. Exploitation requires adjacent-network access, no authentication or user interaction, and results in a service interruption rather than data disclosure or modification.

CVSS severity5.3
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in IBM Security Identity Governance and Intelligence 5.2.6 allows remote attackers to make the application unusable. The Security Access Request apps improperly validate a supplied URL in signup data, allowing malformed input to interrupt application availability. Exploitation requires adjacent-network access, no authentication or user interaction, and results in a service interruption rather than data disclosure or modification.

The record

CVE
CVE-2020-4790
Published
Feb 9, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Security Identity Governance and Intelligence
Classifications
CWE-20, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 9, 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=5.2.6

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

IBM · IBM Security Identity Governance and Intelligenceversion=5.2.6

Published CVSS scores

5.3IBMCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.6IBMCVSS:3.0/AC:H/AV:A/UI:N/A:H/S:U/I:N/PR:N/C:N/RC:C/RL:O/E:U

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

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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