Opengear console server firmware releases prior to 4.5.0 have a stored XSS vulnerability related to serial port logging.

published 2019-07-31 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-5644

cvss: 5.4; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

Opengear console server firmware releases prior to 4.5.0 have a stored XSS vulnerability related to serial port logging. If a malicious user of an external system (connected to a serial port on an Opengear console server) sends crafted text to a serial port (that has logging enabled), the text will be replayed when the logs are viewed. Exploiting this vulnerability requires access to the serial port and/or console server.

Patch / fix

fixed in 1

opengear opengear 4.5.0

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

opengear.zendesk.com https://opengear.zendesk.com/hc/en-us/articles/360029189391-Stored-cross-site-scripting-XSS-vulnerability-in-serial-port-logging referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.4	CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

opengear.zendesk.com /hc/en-us/articles/360029189391-Stored-cross-site-scripting-XSS-vulnerability-in-serial-port-logging
exploit, third-party-advisory

Sources

CVE List CVE-2019-14456
NVD CVE-2019-14456

Fencer Vulns 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.

Summary