CVE-2023-31127: libspdm is a sample implementation that follows the DMTF SPDM specifications

Q: How do I fix CVE-2023-31127?

libspdm: upgrade to 2.3.2. Exact commands for each OS are on this page.

Q: Is CVE-2023-31127 being exploited?

CVE-2023-31127 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-31127 affect?

CVE-2023-31127 affects libspdm. Severity is critical (CVSS 9.0). libspdm is a sample implementation that follows the DMTF SPDM specifications. A vulnerability has been identified in SPDM session establishment in libspdm prior to version 2.3.1. If a device supports both DHE session and PSK session with mu

Q: How urgent is CVE-2023-31127?

Priority 47/100. Critical severity

This month

CRITICAL 9.0UPGRADE

CVE-2023-31127 is a critical-severity flaw (CVSS 9.0) affecting libspdm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

libspdm is a sample implementation that follows the DMTF SPDM specifications. A vulnerability has been identified in SPDM session establishment in libspdm prior to version 2.3.1. If a device supports both DHE session and PSK session with mutual authentication, the attacker may be able to establish the session with `KEY_EXCHANGE` and `PSK_FINISH` to bypass the mutual authentication. This is most likely to happen when the Requester begins a session

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.0 (Critical)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-287, CWE-372
Published	2023-05-08
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: dmtf

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

Am I affected?

Timeline

2023-05-08 21:15 UTCPublished CVE record published
2026-06-17 05:56 UTCUpdated Record last modified

dmtf libspdm UPGRADE

Affected: < 2.3.2

Fixed in: 2.3.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.3.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libspdm

Note

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

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-2023-31127?

libspdm: upgrade to 2.3.2. Exact commands for each OS are on this page.

Is CVE-2023-31127 being exploited?

CVE-2023-31127 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-2023-31127 affect?

CVE-2023-31127 affects libspdm. Severity is critical (CVSS 9.0). libspdm is a sample implementation that follows the DMTF SPDM specifications. A vulnerability has been identified in SPDM session establishment in libspdm prior to version 2.3.1. If a device supports both DHE session and PSK session with mu

How urgent is CVE-2023-31127?

Priority 47/100. Critical severity

Related CVEs

CVE-2023-32690 MEDIUM 5.7 UPGRADE libspdm is a sample implementation that follows the DMTF SPDM specifications

References

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