IoT
CVE-2026-25508
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK
1 technique across 1 tactic: Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 6.3 (MEDIUM). Attack vector: Adjacent Network. Complexity: Low. Privileges required: None. User interaction: Required. Exploitable via remote/network. |
| Exploit ScenarioDerived | A remote attacker could exploit this flaw, an out-of-bounds read and potential memory corruption. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAIv1 – Mar 12, 2026
Out-of-bounds read in ESP-IDF versions 5.1.6 through 5.5.2 allows remote attackers to trigger memory corruption via malformed BLE prepare-write requests during device provisioning mode. An unauthenticated BLE client can exploit improper length tracking in the protocomm_ble transport to cause the provisioning handler to read beyond allocated buffer boundaries. This results in potential information disclosure and denial of service for affected IoT devices.
Earlier versions of this analysis (1)
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, an out-of-bounds read vulnerability was reported in the BLE ATT Prepare Write handling of the BLE provisioning transport (protocomm_ble). [CVSS 6.3 MEDIUM]
RemediationAI
A vendor patch is available — apply it immediately.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-125 (Out-of-bounds Read). Affects Esp-Idf. ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, an out-of-bounds read vulnerability was reported in the BLE ATT Prepare Write handling of the BLE provisioning transport (protocomm_ble). The issue can be triggered by a remote BLE client while the device is in provisioning mode. The transport accumulated prepared-write fragments in a fixed-size buffer but incorrectly tracked the cumulative length. By sending repeated prepa
Know when IoT gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, an out-of-bounds read vulnerability was reported in the BLE ATT Prepare Write handling of the BLE provisioning transport (protocomm_ble). The issue can be triggered by a remote BLE client while the device is in provisioning mode. The transport accumulated prepared-write fragments in a fixed-size buffer but incorrectly tracked the cumulative length. By sending repeated prepare write requests with overlapping offsets, a remote client could cause the reported length to exceed the allocated buffer size. This inflated length was then passed to provisioning handlers during execute-write processing, resulting in an out-of-bounds read and potential memory corruption. This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7.
Executive ViewAI
Organizations using ESF-IDF should be aware of moderate risk from CVE-2026-25508, a out-of-bounds read vulnerability rated CVSS 6.3. Exploitation could cause memory corruption or application crashes. A patch is available and should be applied during regular vulnerability management.
Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.
Affected Products (CPE)GitHub Advisory
A command injection vulnerability (CVSS 9.8). Risk factors: public PoC available.
Plaintext daemon credentials in IDC SFX2100 routing config files (zebra, bgpd, ospfd, ripd). CVSS 10.0. PoC available.
Remote command execution in Aqara Hub firmware (Camera Hub G3 4.1.9_0027, Hub M2 4.3.6_0027, and Hub M3 4.3.6_0025) stem
Kede Electronics IoT smart water meter monitoring platform v1.0 has a SQL injection allowing attackers to compromise the
An unauthenticated OS command injection in the CGI handler of Netcore NR289-GE firmware 1.4.5102 lets remote attackers e
Unauthenticated network attackers can bypass authentication in the Netcore NR289-GE router's boa_temp web handler and ab
Remote unauthenticated OS command injection in Netcore NR289-GE firmware 1.4.5102 allows attackers to execute arbitrary
Unauthenticated OS command injection in the Netcore NR289-GE router (firmware 1.4.5102) lets any remote attacker who can
A stack-based buffer overflow in the devdiscover service of FAST FAC1900R firmware 20190827_2.0.2 lets unauthenticated r
RIOT IoT operating system has an out-of-bounds read vulnerability (CVSS 9.1) that could lead to information disclosure o
Command injection in the Ziroom ZHOME A0101 smart-home hub (firmware 1.0.1.0) allows an attacker with high-privilege aut
Authenticated command injection in Ziroom ZHOME A0101 firmware 1.0.1.0 lets a privileged user execute arbitrary operatin
Exploit-DB