Cyber Resilience

CVE-2025-31715

Critical

Published: 18 August 2025

Published
18 August 2025
Modified
15 April 2026
KEV Added
—
Patch
—
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0091 76.4th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-31715 is a critical-severity an unspecified weakness vulnerability in Unisoc (inferred from references). Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 23.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2025-31715 is a command injection vulnerability in the VoWiFi service stemming from improper input validation. This flaw affects the VoWiFi service component, as disclosed by Unisoc, a chipset vendor whose products are commonly integrated into mobile devices supporting Voice over WiFi functionality.

The vulnerability enables remote exploitation over the network (AV:N) with low attack complexity (AC:L), requiring no privileges (PR:N) or user interaction (UI:N). A successful attack leads to escalation of privilege without additional execution privileges needed, resulting in high impacts to confidentiality, integrity, and availability (C:H/I:H/A:H), as reflected in its CVSS v3.1 base score of 9.8.

Unisoc has published a security announcement regarding CVE-2025-31715 at https://www.unisoc.com/en_us/secy/announcementDetail/1944933773300793346, which security practitioners should consult for details on affected versions, patches, or mitigation guidance.

EU & UK References

Vulnerability details

In vowifi service, there is a possible command injection due to improper input validation. This could lead to remote escalation of privilege with no additional execution privileges needed.

CWE(s)
None listed

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
Why these techniques?

Command injection in network-accessible VoWiFi service directly enables remote exploitation of public-facing apps (T1190) and results in unauthenticated privilege escalation (T1068).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

Affected Assets

Unisoc
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly mandates information input validation and error handling at input points to prevent command injection vulnerabilities like CVE-2025-31715.

SI-2 Flaw Remediation good match
prevent

Requires timely identification, reporting, and correction of system flaws, enabling patching of the specific command injection vulnerability in the VoWiFi service.

SI-9 Information Input Restrictions partial match
prevent

Enforces information input restrictions at system boundaries, complementing validation to block malformed inputs that could lead to command injection in the VoWiFi service.

References