CVE-2025-68474

Adjacent memory corruption via undersized AVRCP buffer

Published Dec 26, 2025 · Updated Dec 26, 2025

Out-of-bounds write in Espressif ESP-IDF 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6 and earlier allows adjacent attackers to corrupt memory. The avrc_vendor_msg() function validates allocation capacity with the 20-byte AVRC_MIN_CMD_LEN although it writes a 29-byte fixed header before copying p_msg->p_vendor_data. Classic Bluetooth and AVRCP target or metadata support must be enabled; a large vendor_len causes memory corruption or a device crash, with a larger overflow when assertions are disabled.

CVSS severity6.1
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Espressif ESP-IDF 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6 and earlier allows adjacent attackers to corrupt memory. The avrc_vendor_msg() function validates allocation capacity with the 20-byte AVRC_MIN_CMD_LEN although it writes a 29-byte fixed header before copying p_msg->p_vendor_data. Classic Bluetooth and AVRCP target or metadata support must be enabled; a large vendor_len causes memory corruption or a device crash, with a larger overflow when assertions are disabled.

The record

CVE
CVE-2025-68474
Published
Dec 26, 2025
Updated
Dec 26, 2025
Vendor
Espressif Systems
Product
ESP-IDF
Classifications
CWE-787, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 26, 2025Record 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=<= 5.1.6
  2. Affected versionversion=>= 5.2-beta1, <= 5.2.6
  3. Affected versionversion=>= 5.3-beta1, <= 5.3.4
  4. Affected versionversion=>= 5.4-beta1, <= 5.4.3
  5. Affected versionversion=>= 5.5-beta1, <= 5.5.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Espressif Systems · ESP-IDFversion=<= 5.1.6; version=>= 5.2-beta1, <= 5.2.6; version=>= 5.3-beta1, <= 5.3.4; version=>= 5.4-beta1, <= 5.4.3; version=>= 5.5-beta1, <= 5.5.1

Published CVSS scores

6.1GitHub, Inc.CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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