How severe is CVE-2026-13466?

CVE-2026-13466 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.

Is CVE-2026-13466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-13466?

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-2026-13466 published?

CVE-2026-13466 was published on 2026-09-24.

CVE-2026-13466

CVE-2026-13466 is a high-severity vulnerability with a CVSS 3.x base score of 8.1. 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-131.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v4: 8.3
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-131
Published: 2026-09-24
Last modified: 2026-09-24

Description

Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows Overflow Buffers. This issue affects Trusted Firmware: through socfpga_v2.14.0.

Frequently asked questions

What is CVE-2026-13466?: Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows Overflow Buffers. This issue affects Trusted Firmware: through socfpga_v2.14.0.
How severe is CVE-2026-13466?: CVE-2026-13466 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.
Is CVE-2026-13466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-13466?: 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-2026-13466 published?: CVE-2026-13466 was published on 2026-09-24.

References

https://www.altera.com/product-security/advisory/asa-0006

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