Cyber Resilience

CVE-2026-26214

Public PoC
Published
12 February 2026
Modified
14 July 2026
CVSS Score v4 9.1
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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
EPSS Score 0.0018 8th percentile
Risk Priority 34 floored blend · peak EPSS

Summary

CVE-2026-26214 is a critical-severity Improper Validation of Certificate with Host Mismatch (CWE-297) vulnerability. Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Adversary-in-the-Middle (T1557); ranked at the 8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SC-23 (Session Authenticity) and SC-8 (Transmission Confidentiality and Integrity) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-26214 is a vulnerability in the Galaxy FDS Android SDK (XiaoMi/galaxy-fds-sdk-android), affecting versions 3.0.8 and prior. The issue stems from the SDK disabling TLS hostname verification when HTTPS is enabled, which is the default configuration via FDSClientConfiguration. In GalaxyFDSClientImpl.createHttpClient(), the SDK configures Apache HttpClient to use SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER, accepting any valid TLS certificate irrespective of hostname mismatch. All applications using the SDK with default settings are therefore vulnerable. The flaw is classified under CWE-297 with a CVSS score of 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

A man-in-the-middle attacker can exploit this vulnerability to intercept and modify communications between the SDK and Xiaomi FDS cloud storage endpoints. Successful exploitation requires network access and high attack complexity but no privileges or user interaction. Attackers can expose authentication credentials, file contents, and API responses, leading to high confidentiality and integrity impacts without affecting availability.

The XiaoMi/galaxy-fds-sdk-android open source project has reached end-of-life status, implying no official patches or updates are available. Mitigation details are covered in advisories from sources including VulnCheck and vulnerability research repositories linked to the CVE.

OWASP Top 10 for Web (2025)

A07:2025 Authentication Failures

EU & UK References

Vulnerability Data

Galaxy FDS Android SDK (XiaoMi/galaxy-fds-sdk-android) version 3.0.8 and prior disable TLS hostname verification when HTTPS is enabled (the default configuration). In GalaxyFDSClientImpl.createHttpClient(), the SDK configures Apache HttpClient with SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER, which accepts any valid TLS certificate regardless of hostname mismatch. Because…

more

HTTPS is enabled by default in FDSClientConfiguration, all applications using the SDK with default settings are affected. This vulnerability allows a man-in-the-middle attacker to intercept and modify SDK communications to Xiaomi FDS cloud storage endpoints, potentially exposing authentication credentials, file contents, and API responses. The XiaoMi/galaxy-fds-sdk-android open source project has reached end-of-life status.

CWE(s)
CWE-297

Related Threats

MITRE ATT&CK Enterprise Techniques

T1557 Adversary-in-the-Middle Credential Access
Adversaries may attempt to position themselves between two or more networked devices using an adversary-in-the-middle (AiTM) technique to support follow-on behaviors such as [Network Sniffing](https://attack.
attack.mitre.org →
T1557.001 Name Resolution Poisoning and SMB Relay Credential Access
By responding to LLMNR/NBT-NS/mDNS network traffic, adversaries may spoof an authoritative source for name resolution to force communication with an adversary controlled system.
attack.mitre.org →
T1557.002 ARP Cache Poisoning Credential Access
Adversaries may poison Address Resolution Protocol (ARP) caches to position themselves between the communication of two or more networked devices.
attack.mitre.org →
T1557.003 DHCP Spoofing Credential Access
Adversaries may redirect network traffic to adversary-owned systems by spoofing Dynamic Host Configuration Protocol (DHCP) traffic and acting as a malicious DHCP server on the victim network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-54019Shared CWE-297
CVE-2026-48145Shared CWE-297
CVE-2026-35563Shared CWE-297
CVE-2025-46408Shared CWE-297
CVE-2026-54275Shared CWE-297
CVE-2025-4295Shared CWE-297
CVE-2025-68637Shared CWE-297
CVE-2026-12162Shared CWE-297
CVE-2024-37015Shared CWE-297
CVE-2025-49015Shared CWE-297

Affected Assets

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V17.2.8

Mitigating Controls (NIST 800-53 r5) AI

SC-23 Session Authenticity good match

Protecting session authenticity structurally requires proper certificate validation to bind the presented certificate to the intended host.

SC-8 Transmission Confidentiality and Integrity good match

Requiring confidentiality and integrity of transmitted data necessitates correct TLS certificate validation with host-name checking.

SA-8 Security and Privacy Engineering Principles partial match

Security engineering principles require correct implementation of certificate validation (including hostname matching) when cryptography is used.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.DS-02 mostly match
prevents

Protecting data-in-transit integrity depends on proper certificate validation to prevent MITM.

PR.PS-06 mostly match
prevents

Secure development practices include coding correct certificate validation logic.

PR.AA-03 partial match
prevents

Server/service authentication via certificates directly requires correct host validation.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect missing certificate validation and host-mismatch checks.

A.8.20 Networks security partial match
degrades

Network security controls include certificate validation and host-name verification to prevent man-in-the-middle attacks.

A.8.21 Security of network services partial match
degrades

Security of network services requires proper TLS configuration and certificate validation for service endpoints.

A.8.24 Use of cryptography partial match
prevents

Use of cryptography mandates correct implementation of certificate validation and hostname verification.

A.8.26 Application security requirements partial match
prevents

Application security requirements include secure communication and certificate validation for external services.

A.8.27 Secure system architecture and engineering principles partial match
mitigates

Secure system architecture principles require proper certificate validation to protect communications.

References