CVE-2026-89229 PUBLISHED

Assigner: Vivo
Reserved: 11.09.2026 Published: 03.11.2026 Updated: 03.11.2026

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in the ShareActivity component of BlueLM Copilot (com.vivo.ai.copilot) allows a malicious application installed on the same device to write arbitrary files via a crafted ACTION_SEND intent with a ContentProvider-supplied file name containing '..' sequences.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS Score: 5.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	vivo
Product	BlueLM Copilot
Versions	Default: unaffected affected from 0 to 7.2.0.0 (excl.)

References

https://www.vivo.com/en/support/security-advisory-detail?id=26

Problem Types

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE

Impacts

A malicious application installed on the same device can write arbitrary files to locations outside the intended shared directory, potentially leading to data tampering, denial of service, or further privilege escalation depending on the reachable write path.