CVE-2025-68474: esp-idf Memory Corruption — Fix

Description

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and earlier, in the avrc_vendor_msg() function of the ESP-IDF BlueDroid AVRCP stack, the allocated buffer size was validated using AVRC_MIN_CMD_LEN (20 bytes). However, the actual fixed header data written before the vendor payload exceeds this value. This totals 29 bytes written before p_msg->p_vendor_data is copied. Using the old AVRC_MIN_CMD_LEN could allow an out-of-bounds write if vendor_len approaches the buffer limit. For commands where vendor_len is large, the original buffer allocation may be insufficient, causing writes beyond the allocated memory. This can lead to memory corruption, crashes, or other undefined behavior. The overflow could be larger when assertions are disabled.

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CVSS v3.1 Score

7.6

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
espressif	esp-idf	All
espressif	esp-idf	All
espressif	esp-idf	All
espressif	esp-idf	All
espressif	esp-idf	All

References

Advisories & Patches

https://github.com/espressif/esp-idf/commit/0b0b59f2e19cb99dfa1b28c284d1c5c1d276a132 https://github.com/espressif/esp-idf/commit/565fa98d0cfd58102204c1cb636747e17ee59845 https://github.com/espressif/esp-idf/commit/8262ee807d5cd425f66304f703eeb3382fb888c0 https://github.com/espressif/esp-idf/commit/a6c1bc5e3e91ad1cb964ce2c178ee40a5d10a4a0 https://github.com/espressif/esp-idf/commit/aa0e3d75db995b7137b55349fc92ee684b47092d https://github.com/espressif/esp-idf/commit/b9ba1e29b65536ab4b670ac099585d09adce0376 https://github.com/espressif/esp-idf/security/advisories/GHSA-43gh-7r4f-qp57

Frequently Asked Questions

What is CVE-2025-68474? +

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and earlier, in the avrc_vendor_msg() function of the ESP-IDF BlueDroid AVRCP stack, the allocated buffer size was validated using AVRC_MIN_CMD_LEN (20 bytes). However, the actual fixed header data written before the vendor payload exceeds this value. This totals 29 bytes written before p_msg->p_vendor_data is copied. Using the old AVRC_MIN_CMD_LEN could allow an out-of-bounds write if vendor_len approaches the buffer limit. For commands where vendor_len is large, the original buffer allocation may be insufficient, causing writes beyond the allocated memory. This can lead to memory corruption, crashes, or other undefined behavior. The overflow could be larger when assertions are disabled. It has a CVSS v3.1 base score of 7.6 (HIGH).

How severe is CVE-2025-68474? +

CVE-2025-68474 has a CVSS v3.1 score of 7.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-68474? +

CVE-2025-68474 affects products from espressif, specifically: esp-idf. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-68474? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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