How severe is CVE-2023-25529?

CVE-2023-25529 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-25529 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-25529?

CVE-2023-25529 affects Nvidia Dgx H100 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-25529?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-25529 published?

CVE-2023-25529 was published on 2023-09-20 and last updated on 2026-06-17.

CVE-2023-25529

CVE-2023-25529 is a high-severity vulnerability in Nvidia Dgx H100 Firmware with a CVSS 3.x base score of 8.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

Severity: High (CVSS 3.x base score 8.0)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Nvidia Dgx H100 Firmware
Published: 2023-09-20
Last modified: 2026-06-17

Description

NVIDIA DGX H100 BMC and DGX A100 BMC contains a vulnerability in the host KVM daemon, where an unauthenticated attacker may cause a leak of another user’s session token by observing timing discrepancies between server responses. A successful exploit of this vulnerability may lead to information disclosure, escalation of privileges, and data tampering.

Frequently asked questions

What is CVE-2023-25529?: NVIDIA DGX H100 BMC and DGX A100 BMC contains a vulnerability in the host KVM daemon, where an unauthenticated attacker may cause a leak of another user’s session token by observing timing discrepancies between server responses. A successful exploit of this vulnerability may lead to information disclosure, escalation of privileges, and data tampering.
How severe is CVE-2023-25529?: CVE-2023-25529 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-25529 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-25529?: CVE-2023-25529 affects Nvidia Dgx H100 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-25529?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-25529 published?: CVE-2023-25529 was published on 2023-09-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:nvidia:dgx_h100_firmware:*:*:*:*:bmc:*:*:*

More vulnerabilities in Nvidia Dgx H100 Firmware

CVE-2023-25528 — High (CVSS 8.8): NVIDIA DGX H100 baseboard management controller (BMC) contains a vulnerability in a web server plugin, where an…
CVE-2023-31009 — High (CVSS 8.3): NVIDIA DGX H100 BMC contains a vulnerability in the REST service, where an attacker may cause improper input…
CVE-2023-25533 — High (CVSS 8.3): NVIDIA DGX H100 BMC contains a vulnerability in the web UI, where an attacker may cause improper input validation. A…
CVE-2023-25530 — High (CVSS 8.0): NVIDIA DGX H100 BMC contains a vulnerability in the KVM service, where an attacker may cause improper input validation.…
CVE-2023-25527 — High (CVSS 7.8): NVIDIA DGX H100 BMC contains a vulnerability in the host KVM daemon, where an authenticated local attacker may cause…
CVE-2023-25531 — High (CVSS 7.6): NVIDIA DGX H100 BMC contains a vulnerability in IPMI, where an attacker may cause insufficient protection of…

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