CVE-2026-16140Network attack vector

Privilege escalation via RAKP session retargeting

Published Sep 15, 2026 · Updated Sep 15, 2026

Improper authorization in OpenBMC phosphor-net-ipmid allows remote authenticated users to escalate privileges through a crafted RAKP 1 request. RAKP 1 handling replaces an established session's user and privilege context with a target account but retains the session's original integrity and encryption keys. A user with an existing valid session and a known higher-privilege account name can issue commands with the target account's authority without re-authentication.

CVSS severityUnavailable
Unscored
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in OpenBMC phosphor-net-ipmid allows remote authenticated users to escalate privileges through a crafted RAKP 1 request. RAKP 1 handling replaces an established session's user and privilege context with a target account but retains the session's original integrity and encryption keys. A user with an existing valid session and a known higher-privilege account name can issue commands with the target account's authority without re-authentication.

The record

CVE
CVE-2026-16140
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
OpenBMC
Product
phosphor-net-ipmid
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <=ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenBMC · phosphor-net-ipmidversion=0 <=ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361

Published CVSS scores

No CVSS assessment is available in this record.

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

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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