CVE-2020-4556

Local disclosure via retained web pages

Published Mar 15, 2023 · Updated Feb 26, 2025

Local data disclosure in IBM Financial Transaction Manager for High Value Payments 3.2.0 through 3.2.10.2 allows local users to read stored web pages. IBM has not published the component or storage-control error that causes the pages to remain available locally. Access requires a local user on the same system; the reported consequence is limited to reading retained page contents.

CVSS severity4.0
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local data disclosure in IBM Financial Transaction Manager for High Value Payments 3.2.0 through 3.2.10.2 allows local users to read stored web pages. IBM has not published the component or storage-control error that causes the pages to remain available locally. Access requires a local user on the same system; the reported consequence is limited to reading retained page contents.

The record

CVE
CVE-2020-4556
Published
Mar 15, 2023
Updated
Feb 26, 2025
Vendor
IBM
Product
IBM Financial Transaction Manager
Classifications
T1005
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2025Record 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=3.2.0 <3.2.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · IBM Financial Transaction Managerversion=3.2.0 <3.2.10

Published CVSS scores

4.0IBMCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1005Data from Local System

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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