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NVD / CVE Program· CNA mitre

CVE-2023-26067: Certain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 1 of 4).

Noroxi assessment

Priority: Plan (action score 43/100)

  • A ready-made attack module is public (Nuclei); exploiting it takes no special expertise.
  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 37.8% (FIRST EPSS); higher than 98.5% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • According to the record, no fixed version is available yet.

Add it to your regular patch cycle. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

HighCVSS 8.1 · v3.1—Proof of concept No fix recorded
Published
Apr 10, 2023
Updated
Jun 17, 2026
EPSS
37.8% · 98th percentile

Report tools

JSON

Action score

43

Plan

Add it to your regular patch cycle.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
11 / 30 · 37.8%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-26067

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
lexmarkcxtpc firmware
lexmarkcx930
lexmarkcx931
lexmarkcx942
lexmarkcx943
lexmarkcx944
lexmarkxc9325
lexmarkxc9335
lexmarkxc9445
lexmarkxc9455
lexmarkxc9465
lexmarkcstpc firmware

and 151 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • lexmark cslbl firmwarebefore cslbl.081.232
  • lexmark cslbn firmwarebefore cslbn.081.232
  • lexmark csnzj firmwarebefore csnzj.081.232
  • lexmark cstat firmwarebefore cstat.081.233
  • lexmark cstmh firmwarebefore cstmh.081.233
  • lexmark cstmh firmwarebefore cstmx.081.233
  • lexmark cstpc firmwarebefore cstpc.081.232
  • lexmark cxlbl firmwarebefore cxlbl.081.232
  • lexmark cxlbn firmwarebefore cxlbn.081.232
  • lexmark cxnzj firmwarebefore cxnzj.081.232
  • lexmark cxtat firmwarebefore cxtat.081.233
  • lexmark cxtmm firmwarebefore cxtmm.081.232
  • lexmark cxtpc firmwarebefore cxtpc.081.232
  • lexmark cxtpp firmwarebefore cstpp.081.233
  • lexmark cxtpp firmwarebefore cxtpp.081.233
  • lexmark cxtzj firmwarebefore cxtzj.081.232
  • lexmark mslbd firmwarebefore mslbd.081.232
  • lexmark mslsg firmwarebefore mslsg.081.232
  • lexmark msngm firmwarebefore msngm.081.232
  • lexmark msngw firmwarebefore msngw.081.232

Same product

lexmark: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-26068Certain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 2 of 4).
    60This week
  • CVE-2023-26070Certain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 4 of 4).
    39Monitor
  • CVE-2023-26069Certain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 3 of 4).
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-26064Apr 10, 2023 · Certain Lexmark devices through 2023-02-19 have an Out-of-bounds Write.
    39Monitor
  • ← EarlierCVE-2023-26065Apr 10, 2023 · Certain Lexmark devices through 2023-02-19 have an Integer Overflow.
    39Monitor
  • ← EarlierCVE-2023-26066Apr 10, 2023 · Certain Lexmark devices through 2023-02-19 have Improper Validation of an Array Index.
    39Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Nuclei detection templateNuclei template CVE-2023-26067 —
Proof-of-concept repository on GitHubstars:282023-08-07

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+118 d
  3. TodayNov 6, 2026+1306 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records