CVE-2018-15497
The Mitel MiVoice 5330e VoIP device is affected by memory corruption flaws in the SIP/SDP packet handling functionality.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Mitel MiVoice 5330e VoIP device is affected by memory corruption flaws in the SIP/SDP packet handling functionality. An attacker can exploit this issue remotely, by sending a particular pattern of SIP/SDP packets, to cause a denial of service state in the affected devices and probably remote code execution.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.87% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- mitel/mivoice 5330e firmware
- Source
- cve@mitre.org
EPSS 4.9% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-18-0009Vendor Advisory
- https://www.nccgroup.trust/uk/our-research/technical-advisory-mitel-mivoice-5330e-memory-corruption-flaw/Exploit, Third Party Advisory
- https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-18-0009Vendor Advisory
- https://www.nccgroup.trust/uk/our-research/technical-advisory-mitel-mivoice-5330e-memory-corruption-flaw/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.