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Fencer Intel
medium 6.1

CVE-2018-12901 json

A vulnerability in the conferencing component of Mitel ST 14.2, versions GA29 (19.49.9400.0) and earlier, could allow an unauthenticated at…

published 2018-10-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-4854

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

A vulnerability in the conferencing component of Mitel ST 14.2, versions GA29 (19.49.9400.0) and earlier, could allow an unauthenticated attacker to conduct a reflected cross-site scripting (XSS) attack due to insufficient validation for the signin.php page. A successful exploit could allow an attacker to execute arbitrary scripts.

Patch / fix

  • mitel st_firmware 19.49.9400.0

Exploit prediction

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.