CVE-2020-4885

Configuration tampering via symbolic-link race

Published Jun 24, 2021 · Updated Sep 17, 2024

Symbolic-link race in IBM Db2 before 11.5.6 on Linux and UNIX allows local users to access and change Db2 configuration. IBM identifies a race involving a symbolic link but does not disclose the affected path, process, or filesystem operation. Local access is required; successful exploitation changes configuration integrity, while IBM reports no confidentiality or availability impact.

CVSS severity6.2
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Symbolic-link race in IBM Db2 before 11.5.6 on Linux and UNIX allows local users to access and change Db2 configuration. IBM identifies a race involving a symbolic link but does not disclose the affected path, process, or filesystem operation. Local access is required; successful exploitation changes configuration integrity, while IBM reports no confidentiality or availability impact.

The record

CVE
CVE-2020-4885
Published
Jun 24, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
Db2
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 24, 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=11.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

IBM · Db2version=11.5

Published CVSS scores

6.2IBMCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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