CVE-2022-2809: A vulnerability in bmcweb of OpenBMC Project allows user to cause denial of service

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HIGH 8.2REMOTEUPGRADE

CVE-2022-2809 is a high-severity flaw (CVSS 8.2) affecting openbmc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in bmcweb of OpenBMC Project allows user to cause denial of service. When fuzzing the multipart_parser code using AFL++ with address sanitizer enabled to find smallest memory corruptions possible. It detected problem in how multipart_parser handles unclosed http headers. If long enough http header is passed in the multipart form without colon there is one byte overwrite on heap. It can be conducted multiple times in a loop to caus

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-122, CWE-229, CWE-787
Published	2022-10-27
Last modified	2026-06-17

Publisher (CNA): The OpenBMC Project · Vendor: openbmc-project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-10-27 13:15 UTCPublished CVE record published
2026-06-17 04:42 UTCUpdated Record last modified

openbmc-project openbmc UPGRADE

Affected: >= 2.10.0 and <= 2.13.0

Fixed in: newer than 2.13.0

Safe to downgrade to: a release before 2.10.0

1. Check installed version

apt-cache policy openbmc || rpm -q openbmc || openbmc --version

2. UPGRADE to newer than 2.13.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openbmc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openbmc

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.10.0 (Debian / Ubuntu)

apt-cache madison openbmc sudo apt install openbmc=<VERSION_BEFORE_2.10.0> sudo apt-mark hold openbmc

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openbmc sudo dnf downgrade openbmc-<VERSION_BEFORE_2.10.0> sudo dnf versionlock add openbmc

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-2809?

openbmc: upgrade to newer than 2.13.0. Exact commands for each OS are on this page.

Is CVE-2022-2809 being exploited?

CVE-2022-2809 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-2809 affect?

CVE-2022-2809 affects openbmc. Severity is high (CVSS 8.2). A vulnerability in bmcweb of OpenBMC Project allows user to cause denial of service. When fuzzing the multipart_parser code using AFL++ with address sanitizer enabled to find smallest memory corruptions possible. It detected problem in how

How urgent is CVE-2022-2809?

Priority 48/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-7254 MEDIUM 5.3 UPGRADE IBM OPENBMC FW1110.00 through FW1110.11 is vulnerable to denial of service attacks by unauthenticated network
CVE-2026-18849 MEDIUM 6.8 UPGRADE UPGRADE IBM OpenBMC FW1060.00 through FW1060.80 is affected by a vulnerability in the BMC firmware update process
CVE-2024-35124 HIGH 7.5 UPGRADE A vulnerability in the combination of the OpenBMC's FW1050.00 through FW1050.10, FW1030.00 through FW1030.50,
CVE-2024-31916 HIGH 7.5 UPGRADE IBM OpenBMC FW1050.00 through FW1050.10 BMCWeb HTTPS server component could disclose sensitive URI content to
CVE-2023-32280 MEDIUM 5.3 UPGRADE Insufficiently protected credentials in some Intel(R) Server Product OpenBMC firmware before versions egs-1.05

References

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