CVE-2023-34336Network attack vector

Code execution via IPMI handler buffer overflow

Published Jun 12, 2023 · Updated Jan 3, 2025

Buffer overflow in the IPMI handler in AMI MegaRAC SP-X allows remote attackers to execute code through a crafted network request. AMI has not disclosed the affected IPMI command or field, the destination buffer, or the copy operation that fails to enforce its bounds. The flaw is reachable without authentication but requires a high-complexity trigger, and successful exploitation can also crash the BMC or elevate privileges.

CVSS severity8.1
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the IPMI handler in AMI MegaRAC SP-X allows remote attackers to execute code through a crafted network request. AMI has not disclosed the affected IPMI command or field, the destination buffer, or the copy operation that fails to enforce its bounds. The flaw is reachable without authentication but requires a high-complexity trigger, and successful exploitation can also crash the BMC or elevate privileges.

The record

CVE
CVE-2023-34336
Published
Jun 12, 2023
Updated
Jan 3, 2025
Vendor
American Megatrends International
Product
MegaRAC SP-X
Classifications
CWE-120, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 3, 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=12.0 <12.7
  2. Affected versionversion=13.0 <13.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

American Megatrends International · MegaRAC SP-Xversion=12.0 <12.7; version=13.0 <13.5

Published CVSS scores

8.1AMICVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1210Exploitation of Remote Services

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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