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CVE-2018-18819

19
FAUCET Score

CVE-2018-18819 is a medium-severity vulnerability affecting Mitel MiCollab and MiVoice Business Express, allowing unauthorized chat session creation due to insufficient access controls. This flaw could enable an unauthenticated attacker to execute arbitrary commands remotely with low attack complexity. While the potential impact includes unauthorized access and command execution, there is currently no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.3, <= 7.3.0.601CPE matchmatch criteria
cpe:2.3:a:mitel:micollab:*:*:*:*:*:*:*:*
>= 8.0.0.40, <= 8.0.2.202CPE matchmatch criteria
cpe:2.3:a:mitel:micollab:*:*:*:*:*:*:*:*
>= 7.0, <= 7.3.1.302CPE matchmatch criteria
cpe:2.3:a:mitel:mivoice_business_express:*:*:*:*:*:*:*:*
>= 8.0.0.40, <= 8.0.2.202CPE matchmatch criteria
cpe:2.3:a:mitel:mivoice_business_express:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 52nd percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

mitel.com / support/security-advisories
Vendor Advisory
mitel.com / support/security-advisories/mitel-product-security-advisory-18-0012
Vendor Advisory