CVE-2026-20415

Local service interruption via imgsys double free

Published Feb 2, 2026 · Updated Feb 2, 2026

Double-free memory corruption in MediaTek imgsys on MT6897 and MT6989 chipsets allows local users with System privilege to interrupt local service. Improper locking permits imgsys to free the same memory address twice during concurrent access, corrupting its memory state. Exploitation requires existing System privilege, needs no user interaction, and affects availability without reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double-free memory corruption in MediaTek imgsys on MT6897 and MT6989 chipsets allows local users with System privilege to interrupt local service. Improper locking permits imgsys to free the same memory address twice during concurrent access, corrupting its memory state. Exploitation requires existing System privilege, needs no user interaction, and affects availability without reported data disclosure or modification.

The record

CVE
CVE-2026-20415
Published
Feb 2, 2026
Updated
Feb 2, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-667, CWE-415, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
CWE-415Double Free
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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