CVE-2026-58008

Unspecified impact via unchecked HKDF key size

Published Sep 24, 2026 · Updated Sep 24, 2026

Stack-based buffer overflow in Altera Arm Trusted Firmware-A through socfpga_v2.14.0 allows attackers to cause unspecified impact via unspecified vectors. The EL3 HKDF path accepts an unchecked key-size value and uses it in a stack-buffer operation, overrunning the fixed destination. Public information does not identify how attackers supply the value or whether exploitation yields a crash, code execution, or data access.

CVSS severityUnavailable
Unscored
EPSS probability0.11%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Altera Arm Trusted Firmware-A through socfpga_v2.14.0 allows attackers to cause unspecified impact via unspecified vectors. The EL3 HKDF path accepts an unchecked key-size value and uses it in a stack-buffer operation, overrunning the fixed destination. Public information does not identify how attackers supply the value or whether exploitation yields a crash, code execution, or data access.

The record

CVE
CVE-2026-58008
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
Altera
Product
Arm Trusted Firmware-A
Classifications
CWE-121, CAPEC-679
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=socfpga_v2.14.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Altera · Arm Trusted Firmware-Aversion=0 <=socfpga_v2.14.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CAPEC-679Exploitation of Improperly Configured or Implemented Memory Protections

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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