# CVE-2026-105622: Zenitel Connect missing lockout and rate limiting on the WAMP-CRA authentication channel

Status: published. Published: 2026-11-13. Updated: 2026-11-13.

Improper restriction of excessive authentication attempts in the WAMP-CRA (challenge-response) authentication path in Zenitel Connect before 1.11.0 allows remote attackers to guess user passwords via unlimited authentication attempts, because the path, in which the broker issues a challenge and the client returns an HMAC of it keyed with the user's secret, applies no account lockout or rate limiting. Affected releases enforce a password policy of at least 12 characters including upper-case, lower-case, numeric and special characters, so practical exploitation requires a reused or predictable password rather than exhaustive guessing. The WAMP-CRA authentication path is removed in 1.11.0.

## Remediation

- fix: Upgrade to version 1.11.0, which removes the WAMP-CRA authentication path (source: CNA: Zenitel)

## Affected products and versions

- Zenitel / Zenitel Connect: ≥ 0; < 1.11.0 (affected, semver). Source: CNA: Zenitel

## Severity and prioritization

- CVSS 4.0: 6.3 (medium); CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N; source: CNA: Zenitel

- CVSS 4.0: 6.3 (medium); CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: cf9c5165-6fe5-4ec0-b5f1-404f1df30a4e

- CISA KEV: No listing in collected sources

- EPSS: Not available

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

- Weaknesses: CWE-307

## Exploit evidence

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

## References

- https://www.zenitel.com/sites/default/files/2026-11/A100K12404-Zenitel-Security-Advisory.pdf (CNA: Zenitel)

- https://www.zenitel.com/sites/default/files/2026-11/A100K12404-Zenitel-Security-Advisory.pdf (cf9c5165-6fe5-4ec0-b5f1-404f1df30a4e)

## Provenance

- CNA: Zenitel: https://www.cve.org/CVERecord?id=CVE-2026-105622; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105622; retrieved 2026-11-14; source updated 2026-11-13

Revision: c6824d0a8acdb3dd41dc3e41b24e76a0ed38afe3169ae71d3939ebcbed6f25b7

Canonical: https://y2.dev/cve/CVE-2026-105622

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