Buffer overflow in Espressif Esp-Idf
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000
Affected products
- Espressif Esp-Idf — versions 5.3.4, >= 5.4-beta1, <= 5.4.3, 5.5.1
Weakness classification (CWE)
References
- github.com/espressif/esp-idf/security/advisories/GHSA-43gh-7r4f-qp57 (Vendor Advisory)
- github.com/espressif/esp-idf/commit/0b0b59f2e19cb99dfa1b28c284d1c5c1d276a132 (Patch)
- github.com/espressif/esp-idf/commit/565fa98d0cfd58102204c1cb636747e17ee59845 (Patch)
- github.com/espressif/esp-idf/commit/8262ee807d5cd425f66304f703eeb3382fb888c0 (Patch)
- github.com/espressif/esp-idf/commit/a6c1bc5e3e91ad1cb964ce2c178ee40a5d10a4a0 (Patch)
- github.com/espressif/esp-idf/commit/aa0e3d75db995b7137b55349fc92ee684b47092d (Patch)
- github.com/espressif/esp-idf/commit/b9ba1e29b65536ab4b670ac099585d09adce0376 (Patch)
Frequently asked questions
- What is CVE-2025-68474?
- CVE-2025-68474 is a high-severity vulnerability in Espressif Esp-Idf, classified under Out-of-bounds Write. CVSS score: 7.6/10. Published 2025-12-27.
- How severe is CVE-2025-68474?
- High severity. CVSS v3 base score is 7.6 out of 10.