How severe is CVE-2023-25521?

CVE-2023-25521 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-25521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-25521?

CVE-2023-25521 primarily affects Nvidia Dgx A100 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-25521?

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-2023-25521 published?

CVE-2023-25521 was published on 2023-07-04 and last updated on 2026-06-17.

CVE-2023-25521

CVE-2023-25521 is a high-severity vulnerability in Nvidia Dgx A100 Firmware with a CVSS 3.x base score of 7.5. 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Nvidia Dgx A100 Firmware
Published: 2023-07-04
Last modified: 2026-06-17

Description

NVIDIA DGX A100/A800 contains a vulnerability in SBIOS where an attacker may cause execution with unnecessary privileges by leveraging a weakness whereby proper input parameter validation is not performed. A successful exploit of this vulnerability may lead to denial of service, information disclosure, and data tampering.

Frequently asked questions

What is CVE-2023-25521?: NVIDIA DGX A100/A800 contains a vulnerability in SBIOS where an attacker may cause execution with unnecessary privileges by leveraging a weakness whereby proper input parameter validation is not performed. A successful exploit of this vulnerability may lead to denial of service, information disclosure, and data tampering.
How severe is CVE-2023-25521?: CVE-2023-25521 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-25521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-25521?: CVE-2023-25521 primarily affects Nvidia Dgx A100 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-25521?: 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-2023-25521 published?: CVE-2023-25521 was published on 2023-07-04 and last updated on 2026-06-17.

References

https://nvidia.custhelp.com/app/answers/detail/a_id/5461

Affected products (2)

cpe:2.3:o:nvidia:dgx_a100_firmware:*:*:*:*:sbios:*:*:*
cpe:2.3:o:nvidia:dgx_a800_firmware:*:*:*:*:sbios:*:*:*

More vulnerabilities in Nvidia Dgx A100 Firmware

CVE-2023-31030 — Critical (CVSS 9.3): NVIDIA DGX A100 BMC contains a vulnerability in the host KVM daemon, where an unauthenticated attacker may cause a…
CVE-2023-31029 — Critical (CVSS 9.3): NVIDIA DGX A100 baseboard management controller (BMC) contains a vulnerability in the host KVM daemon, where an…
CVE-2023-31024 — Critical (CVSS 9.0): NVIDIA DGX A100 BMC contains a vulnerability in the host KVM daemon, where an unauthenticated attacker may cause stack…
CVE-2022-42271 — High (CVSS 8.4): NVIDIA BMC contains a vulnerability in IPMI handler, where an authorized attacker can cause a buffer overflow and cause…
CVE-2022-31599 — High (CVSS 8.2): NVIDIA DGX A100 contains a vulnerability in SBIOS in the Ofbd, where a local user with elevated privileges can cause…
CVE-2022-28200 — High (CVSS 8.2): NVIDIA DGX A100 contains a vulnerability in SBIOS in the BiosCfgTool, where a local user with elevated privileges can…

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