01 Record
CVE-2026-11894
Double-free / use-after-free in Realtek BEE Bluetooth HCI driver `send()` error paths
MediumPUBLISHEDCNA: zephyr
CNA base score5.9 CVSS v3.xCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
02 Description
Double-free / use-after-free in Realtek BEE Bluetooth HCI driver `send()` error paths
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.24% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 15.7% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-23.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-08-11 05:08Z2 MO AGO
- Last updated
- 2026-08-11 17:04Z2 MO AGO
- Reserved
- 2026-06-10
- Assigning CNA
- zephyr
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.9)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
- Weaknesses
- CWE-415Double FreeVariant
- Data version
- 5.2
- Document digest
- cd1a7bc39efdbcd92c1facb83fc12473c0d649dfe5d5e1783984cd4e5064a183
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comFix commithttps://github.com/zephyrproject-rtos/zephyr/commit/9a684b5c314fb1d8670b01f7b6c4450a9353906c
- github.comGHSA-v9mj-h2m6-v9c6https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-v9mj-h2m6-v9c6