CVE-2023-50735

Unauthenticated code execution via malformed PDF parsing

Published Feb 28, 2024 · Updated Aug 23, 2024

Heap corruption in affected Lexmark printer firmware allows remote attackers to execute arbitrary code through document processing. The PostScript interpreter fails to validate user-supplied data while parsing a PDF file, producing memory corruption. Exploitation requires no authentication but has high complexity and executes code in the pagemaker user's context.

CVSS severity9.0
Critical
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap corruption in affected Lexmark printer firmware allows remote attackers to execute arbitrary code through document processing. The PostScript interpreter fails to validate user-supplied data while parsing a PDF file, producing memory corruption. Exploitation requires no authentication but has high complexity and executes code in the pagemaker user's context.

The record

CVE
CVE-2023-50735
Published
Feb 28, 2024
Updated
Aug 23, 2024
Vendor
Lexmark
Product
Lexmark MX410
Classifications
CWE-465, T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 23, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=lw90.sb4.p205

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Lexmark · Lexmark MX410version=0 <=lw90.sb4.p205
Lexmark · Lexmark C792version=0 <=lhs60.hc.p763
Lexmark · Lexmark 6500e MFP Optionversion=0 <=lhs60.jr.p763
Lexmark · Lexmark MSNGW Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark CXTPP Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MX710version=0 <=lw90.tu.p205
Lexmark · Lexmark MXTGM Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark CXTAT Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark C925version=0 <=lhs60.hv.p763
Lexmark · Lexmark CS310version=0 <=lw80.vyl.p249
Lexmark · MXTSN Firmwareversion=0 <=222.030; version=230.001 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MXLBD Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MSNGM Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · X925version=0 <=lhs60.hk.p763
Lexmark · Lexmark MSTGM Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MS610dnversion=0 <=lw90.pr2.p205
Lexmark · Lexmark MS810deversion=0 <=lw90.dn4.p205
Lexmark · Lexmark CX510version=0 <=lw90.gm7.p205
Lexmark · Lexmark CX310version=0 <=lw80.gm2.p249
Lexmark · Lexmark CS410version=0 <=lw80.vy2.p249
Lexmark · X548version=0 <=lhs60.vk.p763
Lexmark · Lexmark MS310version=0 <=lw80.prl.p249
Lexmark · Lexmark CXTGV Firmwareversion=0 <=222.030; version=230.001 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MX310version=0 <=lw80.sb2.p249
Lexmark · Lexmark CXTPC Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MSTSN Firmwareversion=0 <=222.030; version=230.001 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark CXLBN Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark C746version=0 <=lhs60.cm2.p763
Lexmark · Lexmark CXLBL Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MSLBD Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MS315version=0 <=lw90.tl2.p205
Lexmark · Lexmark CXNZJ Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MSLSG Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark CX410version=0 <=lw90.gm4.p205
Lexmark · Lexmark MX610version=0 <=lw90.sb7.p205
Lexmark · Lexmark MS812deversion=0 <=lw90.dn7.p205
Lexmark · X746version=0 <=lhs60.ny.p763
Lexmark · Lexmark MS610deversion=0 <=lw90.pr4.p205
Lexmark · Lexmark CS510version=0 <=lw90.vy4.p205
Lexmark · Lexmark CXTMM Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MXTGW Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · MXTPM Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MS711version=0 <=lw90.dn2.p205
Lexmark · Lexmark MX910version=0 <=lw90.mg.p205
Lexmark · Lexmark MS911version=0 <=lw90.sa.p205
Lexmark · Lexmark C748version=0 <=lhs60.cm4.p763
Lexmark · Lexmark MXNGM Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MXTCT Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MSTGW Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MX6500eversion=0 <=lw90.jd.p205
Lexmark · X792version=0 <=lhs60.mr.p763
Lexmark · Lexmark CXTMH Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark CXTZJ Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark C950version=0 <=lhs60.tp.p763
Lexmark · Lexmark MXLSG Firmwareversion=0 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · Lexmark MSNSN Firmwareversion=0 <=222.030; version=230.001 <=230.041; version=230.075 <=230.078; version=230.200 <=230.203
Lexmark · X950 Seriesversion=0 <=lhs60.tq.p763

Published CVSS scores

7.5Zero Day InitiativeCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.0LexmarkCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-465Pointer Issues
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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