Mitel MiVoice Connect Data Validation Vulnerability
The Service Appliance component in Mitel MiVoice Connect allows remote code execution due to incorrect data validation.
- Vendor
- Mitel
- Product
- MiVoice Connect
- CVSS
- 9.8
- EPSS (exploit probability)
- 55.2%
- Status
- kevransomware use
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2022-29499 being exploited?
Yes. CISA added CVE-2022-29499 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild. CISA marks it as known to be used in ransomware campaigns.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 55.2% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-21. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Mitel MiVoice Connect CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2022-41223 Mitel MiVoice Connect Code Injection Vulnerabilityransomware use | [ MEDIUM ] | 6.8 | 10.7% | |
| CVE-2022-40765 Mitel MiVoice Connect Command Injection Vulnerabilityransomware use | [ MEDIUM ] | 6.8 | 10.6% |