CVE-2025-21082

LOW

OpenHarmony < 5.0.3 - Type Confusion

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-21082. PoCs published by kkaanozturk.

AI-analyzed exploit summary The repository contains functional exploit code for CVE-2025-21082, demonstrating a Use-After-Free (UAF) vulnerability in HyperOS AVCodec. It includes both Python and Rust implementations, with the Rust code simulating the UAF scenario and the Python code demonstrating a directory traversal attack.

Description

in OpenHarmony v5.0.3 and prior versions allow a local attacker cause apps crash through type confusion.

Exploits (1)

nomisec WORKING POC
by kkaanozturk · poc
https://github.com/kkaanozturk/HyperOS-Directory-Traversal-Analysis

The repository contains functional exploit code for CVE-2025-21082, demonstrating a Use-After-Free (UAF) vulnerability in HyperOS AVCodec. It includes both Python and Rust implementations, with the Rust code simulating the UAF scenario and the Python code demonstrating a directory traversal attack.

Classification
Working Poc 95%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: HyperOS AVCodec
No auth needed
Prerequisites: Access to a vulnerable HyperOS instance
devstral-2 · analyzed May 27, 2026 Full analysis →

Scores

CVSS v3 3.3
EPSS 0.0011
EPSS Percentile 1.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-843
Status published
Products (1)
openatom/openharmony < 5.0.3
Published Jun 08, 2025
Tracked Since Feb 18, 2026