01 Record
CVE-2026-81507
ESF-IDF: Bluetooth Classic L2CAP Heap Memory Disclosure Allowing Unauthorized Access to Sensitive Data
MediumPUBLISHEDCNA: GitHub_M
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
02 Description
ESF-IDF: Bluetooth Classic L2CAP Heap Memory Disclosure Allowing Unauthorized Access to Sensitive Data
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
- 0.26% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 18.1% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-16.
- 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
- 2026-10-13 15:12Z15 DAYS AGO
- Last updated
- 2026-10-14 15:00Z14 DAYS AGO
- Reserved
- 2026-08-26
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-125Out-of-bounds ReadBase
- Data version
- 5.2
- Document digest
- f6ac82161924a13b6a9148d05842235a8afb7414de42cd908ce1921dd5740b36
05 Affected products
VendorProductVersionsPlatforms
espressifesp-idf< 5.2.8, >= 5.3-beta1, < 5.3.6, >= 5.4-beta1, < 5.5.5, >= 6.0-beta1, < 6.0.3, >= 6.1-beta1, < 6.1-rc1—
06 References
- github.comhttps://github.com/espressif/esp-idf/security/advisories/GHSA-v335-fxwc-rc44
- github.comhttps://github.com/espressif/esp-idf/commit/14c99559b4337cabcf0f09c21d16b93c4cd7a6fe
- github.comhttps://github.com/espressif/esp-idf/commit/1e07f6d83ca892630a7210df2958455f7ca77b4a
- github.comhttps://github.com/espressif/esp-idf/commit/5731c63ece128f156939b9f734256e2227c1442a
- github.comhttps://github.com/espressif/esp-idf/commit/8de265dc44b1b22c749ea44ee7c609b3da4162f0
- github.comhttps://github.com/espressif/esp-idf/commit/9a6d04f65e0e341e7d72bd417c9f31b8a04ce846
- github.comhttps://github.com/espressif/esp-idf/commit/c2610255a5adce651ca582bb82368c3dd0ee2834
- github.comhttps://github.com/espressif/esp-idf/commit/c8cd8f4f3019ae2f912c8cbe9974445e8d9b8749
- github.comhttps://github.com/espressif/esp-idf/releases/tag/v5.2.8
- github.comhttps://github.com/espressif/esp-idf/releases/tag/v5.3.6
- github.comhttps://github.com/espressif/esp-idf/releases/tag/v5.5.5
- github.comhttps://github.com/espressif/esp-idf/releases/tag/v6.0.3
- github.comhttps://github.com/espressif/esp-idf/releases/tag/v6.1-rc1