How severe is CVE-2025-61971?

CVE-2025-61971 has a CVSS 4.0 base score of 5.9, rated medium severity.

Is CVE-2025-61971 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-61971?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-61971 have an EU (EUVD) identifier?

Yes. CVE-2025-61971 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209811.

When was CVE-2025-61971 published?

CVE-2025-61971 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2025-61971

CVE-2025-61971 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.9. 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-1233.

Key facts

Severity: Medium (CVSS 4.0 base score 5.9)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209811
Weakness: CWE-1233
Published: 2026-05-13
Last modified: 2026-06-17

Description

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in loss of SEV-SNP guest integrity.

Frequently asked questions

What is CVE-2025-61971?: Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in loss of SEV-SNP guest integrity.
How severe is CVE-2025-61971?: CVE-2025-61971 has a CVSS 4.0 base score of 5.9, rated medium severity.
Is CVE-2025-61971 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-61971?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-61971 have an EU (EUVD) identifier?: Yes. CVE-2025-61971 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209811.
When was CVE-2025-61971 published?: CVE-2025-61971 was published on 2026-05-13 and last updated on 2026-06-17.

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html

Other CWE-1233 vulnerabilities

CVE-2025-61972 — High (CVSS 8.5): Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to gain arbitrary System…
CVE-2025-25735 — Medium (CVSS 4.6): Kapsch TrafficCom RIS-9160 & RIS-9260 Roadside Units (RSUs) v3.2.0.829.23, v3.8.0.1119.42, and v4.6.0.1211.28 were…
CVE-2025-25733 — Low (CVSS 3.5): Incorrect access control in the SPI Flash Chip of Kapsch TrafficCom RIS-9160 & RIS-9260 Roadside Units (RSUs)…

Browse all CWE-1233 vulnerabilities →