CVE-2026-55323

Analyzed Analyzed - Analysis Complete

Heap Buffer Overflow in gf_base Update Finger Base

Publication date: 2026-09-15

Last updated on: 2026-09-21

Assigner: Google Devices

Description

In gf_base_update_finger_base of gf_base.c, there is a possible out-of-bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-15

Last Modified

2026-09-21

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-55323

EUVD

EUVD-2026-78947

Affected Vendors & Products

Vendor	Product	Version / Range
google	android	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

This is a heap buffer overflow vulnerability in the function gf_base_update_finger_base of gf_base.c. It allows an out-of-bounds write that could lead to local privilege escalation. No user interaction or additional privileges are required for exploitation.

Detection Guidance

This vulnerability involves a heap buffer overflow in gf_base_update_finger_base of gf_base.c, leading to local privilege escalation. Detection requires analyzing the gf_base.c file for improper bounds checking during buffer operations. Review the function for unsafe memory writes or buffer size mismatches. No specific commands are provided in the context.

Impact Analysis

An attacker could exploit this to gain elevated privileges on your system, potentially allowing them to take control of your device or access sensitive data. Since no user interaction is needed, it could be exploited silently.

Compliance Impact

This vulnerability allows local privilege escalation with high impact on confidentiality, integrity, and availability. Such flaws can violate compliance requirements under GDPR (e.g., unauthorized access to personal data) and HIPAA (e.g., unauthorized access to protected health information) by enabling attackers to gain elevated access to sensitive systems.

Mitigation Strategies

Apply the latest security patches or updates for the affected software component. Monitor vendor advisories for patches specific to gf_base_update_finger_base in gf_base.c. Restrict access to systems where this component is used until patched.

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