CVE-2026-13465— EL3 Stack Buffer Overflow in FCS HKDF Request
Quick assessment
Affected
Altera Trusted Firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
ALTERA HPS 平台上的可信固件存在栈缓冲区溢出漏洞，可导致错误配置或实现的内存保护机制被利用。 该问题影响范围包括：socfpga_v2.14.0 及更早版本的 Trusted Firmware。
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I. Basic Information for CVE-2026-13465
Vulnerability Information
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Vulnerability Title
EL3 Stack Buffer Overflow in FCS HKDF Request
Source: CVE Program / CVE List V5
Vulnerability Description
Stack-based buffer overflow vulnerability in Altera Trusted Firmware on HPS allows Exploitation of Improperly Configured or Implemented Memory Protections.
This issue affects Trusted Firmware: through socfpga_v2.14.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Altera | Trusted Firmware | 0 ~ socfpga_v2.14.0 | - |
|
II. Public POCs for CVE-2026-13465
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-13465 (1)
Same Patch Batch · Altera · 2026-09-24 · 8 CVEs total
| CVE-2026-58007 | 8.1 HIGH | Unchecked SDM mailbox response address enables EL3 secure-memory corruption |
| CVE-2026-58008 | 8.1 HIGH | Unchecked HKDF key-size input in EL3 causes a stack buffer overflow |
| CVE-2026-58004 | 8.1 HIGH | Crafted oversized firmware image causes EL3 stack overflow during VAB authentication on Tr |
| CVE-2026-58005 | 8.1 HIGH | Unvalidated SiP v2 mailbox pointers allow non-secure EL1 access to arbitrary physical addr |
| CVE-2026-58006 | 8.1 HIGH | Altera SoCFPGA BL31 Mailbox Output Pointer Validation Enables EL3 Secure-Memory Corruption |
| CVE-2026-13467 | 8.1 HIGH | Systemic Missing Address Validation in SiP SMC Handlers |
| CVE-2026-13466 | 8.1 HIGH | Unit Confusion in VAB Authentication |
IV. Related Vulnerabilities
Same product: Trusted Firmware
-
CVE-2026-58008
Unchecked HKDF key-size input in EL3 causes a stack buffer o -
CVE-2026-58007
Unchecked SDM mailbox response address enables EL3 secure-me -
CVE-2026-58006
Altera SoCFPGA BL31 Mailbox Output Pointer Validation Enable -
CVE-2026-58005
Unvalidated SiP v2 mailbox pointers allow non-secure EL1 acc -
CVE-2026-58004
Crafted oversized firmware image causes EL3 stack overflow d
Same vendor: Altera
-
CVE-2026-58008
Unchecked HKDF key-size input in EL3 causes a stack buffer o -
CVE-2026-58007
Unchecked SDM mailbox response address enables EL3 secure-me -
CVE-2026-58006
Altera SoCFPGA BL31 Mailbox Output Pointer Validation Enable -
CVE-2026-58005
Unvalidated SiP v2 mailbox pointers allow non-secure EL1 acc -
CVE-2026-58004
Crafted oversized firmware image causes EL3 stack overflow d
Same weakness: CWE-121
-
CVE-2026-101074
Netcore NR289-GE Authentication boa password-check stack-bas -
CVE-2026-101039
FAST FAC1900R devdiscover Service copy_msg_element stack-bas -
CVE-2026-101038
FAST FAC1200R MmtAtePrase stack-based overflow -
CVE-2026-101037
FAST FAC1200R devdiscover Service parse_advertisement_frame -
CVE-2026-95104
BUFFALO Wi-Fi 栈缓冲区溢出致DoS
V. Comments for CVE-2026-13465
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