HOMEVULNERABILITIESCVE-2021-39295
HIGH

CVE-2021-39295

CWE-400Published: April 15, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

In OpenBMC 2.9, crafted IPMI messages allow an attacker to cause a denial of service to the BMC via the netipmid (IPMI lan+) interface.

NVD Source

Technical Analysis

CVE-2021-39295 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

openbmc-project1 product(s)
openbmc
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/google/security-research/security/advisories/GHSA-gg9x-v835-m48q
ADVISORYhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00737.html
ADVISORYhttps://github.com/google/security-research/security/advisories/GHSA-gg9x-v835-m48q
ADVISORYhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00737.html

All References (12)

→
https://github.com/google/security-research/security/advisories/GHSA-gg9x-v835-m48qExploit · Third Party Advisory
→
https://github.com/openbmc/docs/blob/master/release/release-notes.mdRelease Notes
→
https://github.com/openbmc/openbmcProduct
→
https://github.com/openbmc/openbmc/issues/3811Not Applicable
→
https://openbmc.orgProduct
→
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00737.htmlThird Party Advisory
→
https://github.com/google/security-research/security/advisories/GHSA-gg9x-v835-m48qExploit · Third Party Advisory
→
https://github.com/openbmc/docs/blob/master/release/release-notes.mdRelease Notes
→
https://github.com/openbmc/openbmcProduct
→
https://github.com/openbmc/openbmc/issues/3811Not Applicable
→
https://openbmc.orgProduct
→
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00737.htmlThird Party Advisory

Quick Facts

CVE IDCVE-2021-39295
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-400
CISA KEVNo
Affected1 vendor(s)
PublishedApr 15, 2023

Related CVEs (CWE-400)

CVE-2019-10952
9.8
CVE-2018-19282
9.8
CVE-2017-9119
9.8
CVE-2025-61303
9.8
CVE-2017-1000378
9.8
CVE-2018-11936
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-39295 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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