HOMEVULNERABILITIESCVE-2019-18791
MEDIUM

CVE-2019-18791

CWE-79Published: February 13, 2020· Updated: Jun 17, 2026

5.4
CVSS v3.1

Official Description

Lexmark printer MS812 and multiple older generation Lexmark devices have a stored XSS vulnerability in the embedded web server. The vulnerability can be exploited to expose session credentials and other information via the users web browser.

NVD Source

Technical Analysis

CVE-2019-18791 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionRequired
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected Vendors & Products

lexmark160 product(s)
cx31x firmwarecx31xcx41x firmwarecx41xcx310 firmwarecx310ms310 firmwarems310ms312 firmwarems312ms317 firmwarems317+148
Source: NVD CPE · 160 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

All References (4)

Quick Facts

CVE IDCVE-2019-18791
CVSS Score5.4 / 10
SeverityMEDIUM
WeaknessCWE-79
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 13, 2020

Related CVEs (CWE-79)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2019-18791 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.