# CVE-2026-63243: Firmware verification vulnerability

Status: published. Published: 2026-10-23. Updated: 2026-11-02.

An
authentication vulnerability in the Bluetooth Low Energy (BLE) implementation
of Creative Sound Blaster Katana could allow an attacker within Bluetooth range
to connect to an affected device without prior pairing or authentication.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Creative Labs / Creative Sound Blaster Katana V2, V2X, SE: 1.30.260813.1100 (affected). Source: CNA: CSA

## Severity and prioritization

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N; source: CNA: CSA

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N; source: NVD: 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4

- CISA KEV: No listing in collected sources

- EPSS: 0.21% as of 2026-11-02; percentile 10.51%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-287

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-134/ (CNA: CSA)

- https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-134/ (5f57b9bf-260d-4433-bf07-b6a79e9bb7d4)

## Provenance

- CNA: CSA: https://www.cve.org/CVERecord?id=CVE-2026-63243; retrieved 2026-11-02; source updated 2026-11-02

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63243; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-63243; retrieved 2026-11-02; source updated Not reported

Revision: b6916caa902cda412db528f76ac474928c16632d21abddb7be96f1d00cad484c

Canonical: https://y2.dev/cve/CVE-2026-63243

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.