# 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.

CVE record · `CVE-2026-122118`

- **Identifiers:** `CVE-2026-122118`
- **State:** Confirmed
- **Severity:** CVSS 7.4 High
- **Critical:** No
- **CNA:** mitre
- **Weakness (CWE):** [CWE-334](https://cwe.mitre.org/data/definitions/334.html)
- **Tags:** [CWE-334](https://agentprime.io/advisories/tag/cwe-334.md)
- **Technologies:** [Yealink AVHub](https://agentprime.io/advisories/technology/yealink-avhub.md) · [Yealink UVC86](https://agentprime.io/advisories/technology/yealink-uvc86.md) · [Yealink SmartVision 80](https://agentprime.io/advisories/technology/yealink-smartvision-80.md) · [Yealink UVC40 E2](https://agentprime.io/advisories/technology/yealink-uvc40-e2.md) · [Yealink MeetingBorard C](https://agentprime.io/advisories/technology/yealink-meetingborard-c.md) · [Yealink MeetingBar A10](https://agentprime.io/advisories/technology/yealink-meetingbar-a10.md) · [Yealink MeetingBar A40](https://agentprime.io/advisories/technology/yealink-meetingbar-a40.md) · [Yealink MeetingBar A50](https://agentprime.io/advisories/technology/yealink-meetingbar-a50.md)
- **Published:** 4 Nov 2026
- **Updated:** 4 Nov 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: mitre) at 4 Nov 2026, 17:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Yealink. Product: AVHub.
  - affected: `before 153.135.0.76` (custom)
  - Other versions: unaffected
- Vendor: Yealink. Product: UVC86.
  - affected: `before 151.435.0.66` (custom)
  - Other versions: unaffected
- Vendor: Yealink. Product: SmartVision 80.
  - affected: `before 321.435.0.86` (custom)
  - Other versions: unaffected
- Vendor: Yealink. Product: UVC40 E2.
  - affected: `before 319.410.0.66` (custom)
  - Other versions: unaffected
- Vendor: Yealink. Product: MeetingBorard C.
  - affected: `before 328.321.0.40` (custom)
  - Other versions: unaffected
- Vendor: Yealink. Product: MeetingBar A10.
  - affected: `before 278.320.0.86` (custom)
  - Other versions: unaffected
- Vendor: Yealink. Product: MeetingBar A40.
  - affected: `before 289.320.0.81` (custom)
  - Other versions: unaffected
- Vendor: Yealink. Product: MeetingBar A50.
  - affected: `before 323.320.0.54` (custom)
  - Other versions: unaffected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.4 High, CVSS 3.1: `CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N`, from CNA (mitre)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 10th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 4 Nov 2026, 17:55 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-122118)
- 4 Nov 2026, 18:07 UTC: First seen by agentprime
- 4 Nov 2026, 18:17 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-122118)

## Sources

- [CVE List: CVE-2026-122118](https://www.cve.org/CVERecord?id=CVE-2026-122118)
- [NVD: CVE-2026-122118](https://nvd.nist.gov/vuln/detail/CVE-2026-122118)

### References from the CNA

- <https://www.yealink.com/en/trust-center/security-bulletins/wifi-ap-weak-password-vulnerability>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-122118>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-122118/>. Everything for agents: <https://agentprime.io/llms.txt>.