# CVE-2026-122118: CVE-2026-122118

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

In certain Yealink products before 2026-04-15, when the Wi-Fi AP function is enabled, a default 8-digit numeric PSK with insufficient strength is used. Attackers can exploit this weakness via brute-force attacks to gain unauthorized network access and intercept Wi-Fi traffic.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Yealink / AVHub: ≥ 0; < 153.135.0.76 (affected, custom). Source: CNA: mitre
- Yealink / UVC86: ≥ 0; < 151.435.0.66 (affected, custom). Source: CNA: mitre
- Yealink / SmartVision 80: ≥ 0; < 321.435.0.86 (affected, custom). Source: CNA: mitre
- Yealink / UVC40 E2: ≥ 0; < 319.410.0.66 (affected, custom). Source: CNA: mitre
- Yealink / MeetingBorard C: ≥ 0; < 328.321.0.40 (affected, custom). Source: CNA: mitre
- Yealink / MeetingBar A10: ≥ 0; < 278.320.0.86 (affected, custom). Source: CNA: mitre
- Yealink / MeetingBar A40: ≥ 0; < 289.320.0.81 (affected, custom). Source: CNA: mitre
- Yealink / MeetingBar A50: ≥ 0; < 323.320.0.54 (affected, custom). Source: CNA: mitre

## Severity and prioritization

- CVSS 3.1: 7.4 (high); CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N; source: CNA: mitre

- CISA KEV: No listing in collected sources

- EPSS: Not available

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

- Weaknesses: CWE-334

## Exploit evidence

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

## References

- https://www.yealink.com/en/trust-center/security-bulletins/wifi-ap-weak-password-vulnerability (CNA: mitre)

## Provenance

- CNA: mitre: https://www.cve.org/CVERecord?id=CVE-2026-122118; retrieved 2026-11-04; source updated 2026-11-04

Revision: 8d2160529606cabfc9b917ff7ab5b4c4e26f1bb428e4849c1f0dae072e46c4e5

Canonical: https://y2.dev/cve/CVE-2026-122118

## 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.