Vulnary
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Critical· 9.8actively exploitedofficial fix available

CVE-2022-29499

Mitel MiVoice Connect Service Appliances (SA 100, SA 400, Virtual SA) through version 19.2 SP3 are vulnerable to remote code execution due to improper data validation. An attacker can run arbitrary code without authentication or user interaction. The vulnerability is critical with a CVSS score of 9.8.

publishedApr 26, 2022
last modifiedAug 6, 2026
sourcesNVD · CISA-KEV
severity · cvss
9.8
critical · how bad it is
exploitation · epss
55%
99th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 5, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

Mitel MiVoice Connect Service Appliances (SA 100, SA 400, Virtual SA) running version 19.2 SP3 or earlier.

02

Real-world impact

An attacker could take full control of the affected Service Appliance, potentially compromising the entire VoIP infrastructure, data, and network.

03

Why this severity

The CVSS score of 9.8 reflects that the flaw allows remote code execution with no authentication, no user interaction, and full impact on confidentiality, integrity, and availability.

04

What to do about it

official fix available
recommended steps
  1. 01Follow Mitel’s instructions to update the Service Appliance component to a patched version.

CISA KEV required action

05

Timeline

  1. Apr 26, 2022 · Apr 26, 2022
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jun 27, 2022 · Jun 27, 2022
    Confirmed exploited (CISA KEV)
    CISA added it to the Known Exploited Vulnerabilities catalog — attackers are using it in the wild.
  3. Jul 18, 2022 · Jul 18, 2022
    CISA remediation deadline
    Federal agencies are required to remediate by this date.
  4. Aug 6, 2026 · 3h ago
    Advisory updated
    The NVD record was last revised.
  5. Aug 6, 2026 · 54m ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗CISA KEV catalog ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →