CVE-2025-68657Public exploit

Heap corruption via concurrent HID interface teardown

Published Jan 12, 2026 · Updated Jan 12, 2026

Double free in Espressif Systems ESP-USB before 1.1.0 allows physically proximate attackers to corrupt host heap metadata. The USB event callback and hid_host_device_close() use shared hid_iface_t state without locking, allowing both paths to tear down a READY interface and free the same usb_transfer_t. Exploitation requires a malicious HID gadget to force repeated disconnects during an application close call with sub-microsecond timing; a successful race can crash the host or tamper with heap metadata.

CVSS severity6.4
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in Espressif Systems ESP-USB before 1.1.0 allows physically proximate attackers to corrupt host heap metadata. The USB event callback and hid_host_device_close() use shared hid_iface_t state without locking, allowing both paths to tear down a READY interface and free the same usb_transfer_t. Exploitation requires a malicious HID gadget to force repeated disconnects during an application close call with sub-microsecond timing; a successful race can crash the host or tamper with heap metadata.

The record

CVE
CVE-2025-68657
Published
Jan 12, 2026
Updated
Jan 12, 2026
Vendor
Espressif Systems
Product
ESP-USB
Classifications
CWE-415, CWE-667, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 12, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.1.0

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Espressif Systems · ESP-USBversion=< 1.1.0

Published CVSS scores

6.4GitHub, Inc.CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-415Double Free
CWE-667Improper Locking
T1200Hardware Additions

Public exploit references

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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