CVE-2026-25507
CVE-2026-25507 — ESF-IDF Has Use-after-free Vulnerability in BLE Provisioning
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, a use-after-free vulnerability was reported in the BLE provisioning transport (protocomm_ble) layer. The issue can be triggered by a remote BLE client while the device is in provisioning mode. The vulnerability occurred when provisioning was stopped with keep_ble_on = true. In this configuration, internal protocomm_ble state and GATT metadata were freed while the BLE stack and GATT services remained active. Subsequent BLE read or write callbacks dereferenced freed memory, allowing a connected or newly connected client to trigger invalid memory acces. This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7.
Published Updated Sources: cvelistV5, GitHub_M
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.
Exploitation
Unreported
no source claims exploitation
EPSS
0%
chance of exploitation in 30 days
CVSS base
6.3
MEDIUM
CISA SSVC assessment
Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.
Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script all four kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component
Affected scope
The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.
Vendors (1)
Products (1)
Every base score collected
Sources score independently and disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Source |
|---|---|---|---|---|---|
| 6.3 | CVSS 3.1 | MEDIUM | — | — | cvelistV5 |
Weakness & attack patterns
- CWE-416
References
8 on the record
- github.com/espressif/esp-idf/security/advisories/GHSA-h7r3-gmg9-xjmg
x_refsource_CONFIRM
- github.com/espressif/esp-idf/commit/0540c85140c2c06c0cbecc8843277ea676d5c4a9
x_refsource_MISC
- github.com/espressif/esp-idf/commit/1ff264abf2504cade46f0ce3a03f821310bcf6d7
x_refsource_MISC
- github.com/espressif/esp-idf/commit/47552ff4fd824caf38215468ebd2f31fb5f36d70
x_refsource_MISC
- github.com/espressif/esp-idf/commit/4c3fdcd316f780bab4ae5aa73c9626ea9fe24ac6
x_refsource_MISC
- github.com/espressif/esp-idf/commit/894c28afe3f2f8f31ff25b64191883517dddb5cf
x_refsource_MISC
- github.com/espressif/esp-idf/commit/cde7b7362adc15638c141c249681cbe5d23de663
x_refsource_MISC
- github.com/espressif/esp-idf/commit/dba9a7dc01e4dab14c77d328f6a6f46369aeee63
x_refsource_MISC
Elsewhere on this site
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.