Security readout for executives and security teams
Plain-English summary
This vulnerability can let an unauthenticated remote attacker run code on affected Mitel MiVoice Connect Service Appliances. Because CISA lists CVE-2022-29499 in KEV, defenders should treat exposed appliances as urgent business risk, especially for voice and communications continuity.
Executive priority
Treat this as immediate priority for any organization using Mitel MiVoice Connect Service Appliances. The issue is critical, remotely exploitable, unauthenticated, and listed by CISA as known exploited.
Technical view
CVE-2022-29499 is a CWE-20 incorrect input validation flaw in the Service Appliance component of Mitel MiVoice Connect through 19.2 SP3, affecting SA 100, SA 400, and Virtual SA. CVSS 3.1 is 9.8 with network attack vector and no privileges or user interaction required.
Likely exposure
Exposure is most likely where Mitel MiVoice Connect Service Appliances are deployed, especially SA 100, SA 400, or Virtual SA systems through 19.2 SP3 with network-reachable service interfaces.
Exploitation context
Active exploitation is supported by CISA KEV listing for this CVE. The source bundle does not provide exploit mechanics, campaign details, or telemetry volume, so do not infer prevalence beyond known exploitation status.
Researcher notes
The public bundle identifies affected component and appliance families but not exact fixed versions or detailed mitigations. Use vendor advisory validation for patch status and avoid assuming unrelated Mitel products are affected.
Mitigation direction
- Inventory Mitel MiVoice Connect Service Appliances, including SA 100, SA 400, and Virtual SA.
- Review and apply Mitel Product Security Advisory 22-0002 guidance.
- Remove unnecessary external network exposure for Service Appliance interfaces.
- Prioritize remediation for appliances running through 19.2 SP3.
- Monitor vendor and CISA guidance for updated remediation details.
Validation and detection
- Confirm whether any Service Appliance is running MiVoice Connect through 19.2 SP3.
- Check whether appliance management or service interfaces are internet-accessible.
- Review logs for unexpected remote access or process activity.
- Verify remediation status against Mitel advisory 22-0002.
- Track this CVE in vulnerability management as CISA KEV-listed.
Public sources used
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-29499 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-22-0002CVE reference · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-29499CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.