CVE-2026-13466
Unit Confusion in VAB Authentication
CVE-2026-13466 is a high vulnerability (CVSS 8.3) in Altera Trusted Firmware, published September 24, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. No source names a fixed version.
- Severity
- 8.3 HighCVSS 4.0, CVE List
- Exploit chance
- 0.11%EPSS, 1st percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
What each source reports
CVE List Score used
Unit Confusion in VAB Authentication
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.
- Record
CVE-2026-13466- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H - CVSS 3.1
- 8.1 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H - Weakness
- CWE-131
- Updated
- 2026-11-02
EUVDEUVD-2026-85923
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.
- Record
EUVD-2026-85923- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-h785-rv9q-vrg6
Incorrect calculation of buffer size vulnerability in Altera Trusted Firmware on HPS allows...
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.
- Record
GHSA-h785-rv9q-vrg6- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 8.1 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H - Weakness
- CWE-131
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-13466- CVSS 4.0
- 8.3 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 8.1 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H - Weakness
- CWE-131
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.