CVE-2022-3409Public exploitNetwork attack vector

Unauthenticated service interruption via malformed multipart header

Published Oct 27, 2022 · Updated May 5, 2025

Out-of-bounds write in OpenBMC bmcweb 2.12 and earlier allows remote attackers to interrupt the service via a multipart request. The multipart_parser accepts a long, unclosed HTTP header without a colon and writes one byte past a heap buffer. No authentication or user interaction is required, and repeating the request loop exhausts availability by interrupting bmcweb.

CVSS severity8.2
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in OpenBMC bmcweb 2.12 and earlier allows remote attackers to interrupt the service via a multipart request. The multipart_parser accepts a long, unclosed HTTP header without a colon and writes one byte past a heap buffer. No authentication or user interaction is required, and repeating the request loop exhausts availability by interrupting bmcweb.

The record

CVE
CVE-2022-3409
Published
Oct 27, 2022
Updated
May 5, 2025
Vendor
OpenBMC Project
Product
OpenBMC
Classifications
CWE-121, CWE-229, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 27, 2022CVE publishedPublication date reported by the CVE source.
  2. May 5, 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=2.10 <Release* changes=[{"at":"2.13","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenBMC Project · OpenBMCversion=2.10 <Release* changes=[{"at":"2.13","status":"unaffected"}]

Published CVSS scores

8.2OpenBMC ProjectCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-229Improper Handling of Values
T1499.004Application or System Exploitation

Public exploit references

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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