Security Resilience

CVE-2022-29499

Mitel Mivoice Connect ≤ 22.20.2300.0

CISA KEVActive ExploitationEUVD ExploitedRansomware-linked
Published
26 April 2022
Modified
06 August 2026
KEV Added
27 June 2022
Patch / advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.55 99.0th percentile
Risk Priority 97 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2022-29499 is a critical-severity Improper Input Validation (CWE-20) vulnerability in Mitel Mivoice Connect. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 1.0% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

The vulnerability CVE-2022-29499 affects the Service Appliance component in Mitel MiVoice Connect through version 19.2 SP3, including the SA 100, SA 400, and Virtual SA appliances. It arises from incorrect data validation (CWE-20) and enables remote code execution with a CVSS 3.1 base score of 9.8 reflecting network attack vector, low complexity, and no required privileges or user interaction.

An unauthenticated remote attacker can send specially crafted data to the affected appliances over the network to execute arbitrary code, resulting in complete loss of confidentiality, integrity, and availability on the target system.

Mitel's Product Security Advisory 22-0002 provides official guidance on the issue, while CISA includes the CVE in its catalog of known exploited vulnerabilities, indicating that public mitigations and patches should be applied promptly.

The associated EPSS score has reached a peak of 0.9094 with a current value of 0.8862, confirming substantial real-world exploitation interest after disclosure.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

The Service Appliance component in Mitel MiVoice Connect through 19.2 SP3 allows remote code execution because of incorrect data validation. The Service Appliances are SA 100, SA 400, and Virtual SA.

CWE(s)
KEV Date Added
27 June 2022

Related Threats

CVEs Like This One

CVE-2022-40765Same product: Mitel Mivoice Connectboth on KEV
CVE-2022-41223Same product: Mitel Mivoice Connectboth on KEV
CVE-2023-31457Same product: Mitel Mivoice Connect
CVE-2023-31458Same product: Mitel Mivoice Connect
CVE-2023-25598Same product: Mitel Mivoice Connect
CVE-2023-39289Same product: Mitel Mivoice Connect
CVE-2023-31459Same product: Mitel Mivoice Connect
CVE-2023-25599Same product: Mitel Mivoice Connect
CVE-2023-39291Same product: Mitel Mivoice Connect
CVE-2023-31460Same product: Mitel Mivoice Connect

Affected Assets

mitel
mivoice connect
≤ 22.20.2300.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-20

Security testing and developer training directly verify and enforce proper input validation, reducing exploitability of injection and malformed-data weaknesses.

addresses: CWE-20

Security testing and evaluation at multiple SDLC stages directly detects missing or flawed input validation, with the required remediation process ensuring fixes are applied.

addresses: CWE-20

Directly implements checks on information inputs to reject invalid data before processing.

addresses: CWE-20

Spam protection mechanisms perform filtering and detection on inbound/outbound messages, directly compensating for missing or weak input validation of unsolicited content.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

blocks

A.8.25 mandates security requirements, secure coding guidelines, checkpoints, testing (incl. code scans) and developer training in the SDLC, which reaches a slice of input validation defects but leaves the majority (incomplete enforcement, second-order inputs, parser differentials, post-validation canonicalization) unaddressed as in the SA-3 and A.8.28 anchors.

blocks

Mandating input controls that include integrity checks and input validation ensures that untrusted data is examined before use, blocking the root cause of many injection and malformed-data weaknesses.

blocks

Security-by-design principles explicitly call for data validation and sanitization at every layer, reducing the chance that malformed or malicious input will be processed without scrutiny.

prevents

Requiring language-specific secure coding standards, peer review, SAST and documented mitigation of common programming errors forces validation of all inputs before they are trusted.

finds

Testing against a defined set of requirements and using code review plus vulnerability scanning forces validation of inputs and handling of unanticipated conditions, reducing the chance that malformed data will be accepted.

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-20, a class-level weakness, and none of its children carries one either.

References