Is CVE-2023-26067 actively exploited?

Yes. KEV Intelligence tracks CVE-2023-26067 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2023-26067. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

Version-level data is not available; KEV Intelligence tracks Lexmark Lexmark devices.

No. CVE-2023-26067 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2023-26067

Lexmark devices

Lexmark / Lexmark devices

View live feed Monitor via API Watch CVE

Severity: CVSS 8.1 · High
Confidence: High
Exploit status: Exploited in the wild
EPSS: 37.8%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-26067 is an unauthenticated vulnerability affecting Lexmark Lexmark devices. Certain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 1 of 4).

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

Lexmark / Lexmark devices.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Certain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 1 of 4)

Certain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 1 of 4).

Published: 10 Apr 2023
Exploitation Reported: 10 Apr 2023
Attack vector: Remote
Complexity: High
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2023-26067
support.lexmark.com/alerts support.lexmark.com · CVE Record https://support.lexmark.com/alerts/
publications.lexmark.com/publications/security-alerts/CVE-2023-26067.pdf publications.lexmark.com · CVE Record https://publications.lexmark.com/publications/security-alerts/CVE-202...
packetstormsecurity.com/files/174763/Lexmark-Device-Embedded-Web-Ser... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/174763/Lexmark-Device-Embedded-W...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

The Shadowserver

Recorded 10 Apr 2023

Independent exploitation attestation added to the KEV Intelligence record.

Proof of concept available

GitHub

Recorded 07 Aug 2023

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source	Added
The Shadowserver First	2023-04-10 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

Nuclei template detected 25 Apr 2025.

View Nuclei template

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-26067.yaml	25 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

8.1 High

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

EPSS

37.8%

Weaknesses

Improper Input Validation CWE-20

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Lexmark Printers - Command Injection

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

12 Jun 2026
Public PoC available

Public proof-of-concept code published
25 Apr 2025
Nuclei template available

Scanner coverage available
10 Apr 2023
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
10 Apr 2023
CVE published

Vulnerability disclosed publicly
19 Feb 2023
CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-26067

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2023-26067",
  "confidence": "High",
  "cvss_score": 8.1,
  "cvss_estimated": false,
  "epss_score": 0.37835,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

Early warning alerts

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