Integer underflow in ESP-IDF - CVE-2026-25532
Published: February 4, 2026
Vulnerability identifier: #VU122301
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-25532
CWE-ID: CWE-191
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to integer underflow in the WPS Enrollee implementation. A remote attacker on the local network can send a specially crafted request to the affected application, trigger integer underflow and cause a denial of service condition on the target system.
Affected software
ESP-IDF
How to mitigate CVE-2026-25532
Install updates from vendor's website.
ESP-IDF - addressed in versions 5.1.7, 5.2.6