CVE-2023-31189

Local privilege escalation via undisclosed authentication flaw

Published Feb 14, 2024 · Updated Aug 14, 2024

Improper authentication in Intel Server OpenBMC Firmware before egs-1.09 allows local users to escalate privileges through local access. Intel has not published the affected authentication component or the incorrect operation it performs on attacker-controlled input. Exploitation requires existing low privileges on affected Sapphire Rapids Eagle Stream hardware and permits limited data exposure or alteration without interrupting service.

CVSS severity5.2
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Intel Server OpenBMC Firmware before egs-1.09 allows local users to escalate privileges through local access. Intel has not published the affected authentication component or the incorrect operation it performs on attacker-controlled input. Exploitation requires existing low privileges on affected Sapphire Rapids Eagle Stream hardware and permits limited data exposure or alteration without interrupting service.

The record

CVE
CVE-2023-31189
Published
Feb 14, 2024
Updated
Aug 14, 2024
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Server OpenBMC Firmware
Classifications
CWE-287, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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=before version egs-1.09

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel Server OpenBMC Firmwareversion=before version egs-1.09

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
5.2Intel CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1068Exploitation for Privilege Escalation

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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