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Zenitel Connect remote password guessing in WAMP-CRA authentication

CVE-2026-105622

6.3MediumCNA
Exploited
No known exploitation
Fix
Fixed in 1.11.0
Who is exposed
Not reported

Do first: Upgrade to a fixed version: 1.11.0.

Published
Last modified
Reference
Last checked
23/100 · provisional
None on Exploit-DB, Metasploit or GitHub

Summary

Zenitel Connect's WAMP-CRA challenge-response login path does not limit repeated authentication attempts, so an attacker can reach it remotely without logging in and guess user passwords without limit. Practical exploitation requires a reused or predictable password, because affected releases enforce a strong password policy.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

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.

cve.now Index

23Pcve.now Index 23 of 100 · methodology v3 · provisional
  • Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
  • Exposure17/25No login or user action needed per the CVSS vector, reachable over the network without a login · Unknown: No advisory context yet
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity6.3/10CVSS 6.3
  • No patch0/5No signal

What would change the score

  • Would score about 68 if added to CISA KEV
  • Would score about 63 if CISA's SSVC rates exploitation active
  • Would score about 28 if advisories confirm default setups are exposed

What to do

  • Upgrade to a fixed version: 1.11.0.

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

Check whether my systems are affected by CVE-2026-105622 (Zenitel Connect missing lockout and rate limiting on the WAMP-CRA authentication channel), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-105622 (entry last updated 2026-11-13):
Affected:
- Zenitel Zenitel Connect: fixed in 1.11.0
Fixed versions: 1.11.0.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-105622 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-105622 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://www.zenitel.com/sites/default/files/2026-11/A100K12404-Zenitel-Security-Advisory.pdf
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-105622
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-105622"}.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • Zenitel Zenitel Connect

    fixed in 1.11.0

Evidence 3

Vendor advisory · 1

Establishes: Affected and fixed versions.

  1. Link

CVE record · 2

Establishes: The identifier and description.

  1. Record
  2. Record

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

Questions about CVE-2026-105622

Is CVE-2026-105622 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-105622?

Zenitel Connect: before 1.11.0.Source: cve.now feed data

How do I fix CVE-2026-105622?

Upgrade to a fixed version: 1.11.0.Source: cve.now feed data