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🛡️ CVE-2023-26065 — cslbl-firmware

🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-190 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Certain Lexmark devices through 2023-02-19 have an Integer Overflow.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2023-26065 is classified as CWE-190: Integer Overflow or Wraparound. Arithmetic produces a value too large for its type and wraps around, so a later size or bounds check passes when it should not.

Affected software

CVE-2023-26065 is recorded against 26 packages.

  • cslbl-firmware (fixed in cslbl.081.232)
  • cslbn-firmware (fixed in cslbn.081.232)
  • csnzj-firmware (fixed in csnzj.081.232)
  • cstpc-firmware (fixed in cstpc.081.232)
  • cstzj-firmware (fixed in cstzj.081.232)
  • cxlbl-firmware (fixed in cxlbl.081.232)
  • cxlbn-firmware (fixed in cxlbn.081.232)
  • cxtmm-firmware (fixed in cxtmm.081.232)
  • cxtpc-firmware (fixed in cxtpc.081.232)
  • cxtzj-firmware (fixed in cxtzj.081.232)
  • lhs60-firmware (fixed in lhs60.jr.p760)
  • lp-firmware (fixed in lp.sp.p837)
  • lr-firmware (fixed in lr.fl.p838)
  • lw80-firmware (fixed in lw80.gm7.p234)
  • mslbd-firmware (fixed in mslbd.081.232)
  • mslsg-firmware (fixed in mslsg.081.232)
  • msngm-firmware (fixed in msngm.081.232)
  • msngw-firmware (fixed in msngw.081.232)
  • mstgw-firmware (fixed in mstgw.081.232)
  • mxlbd-firmware (fixed in mxlbd.081.232)
  • mxlsg-firmware (fixed in mxlsg.081.232)
  • mxngm-firmware (fixed in mxngm.081.232)
  • mxtct-firmware (fixed in mxtct.081.232)
  • mxtgm-firmware (fixed in mxtgm.081.232)
Show the remaining 2 packages
  • mxtgw-firmware (fixed in mxtgw.081.232)
  • mxtpm-firmware (fixed in mxtpm.081.232)

Timeline and source

Published on 10 April 2023 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

publications.lexmark.com
support.lexmark.com
publications.lexmark.com
support.lexmark.com

Other advisories for this package

cslbl-firmware has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-190: Integer Overflow or Wraparound) in other software:

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-190
Public Exploit ✅ No
Source NVD
Published 2023-04-10
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
cslbl-firmware cslbl.081.232
cslbn-firmware cslbn.081.232
csnzj-firmware csnzj.081.232
cstpc-firmware cstpc.081.232
cstzj-firmware cstzj.081.232
cxlbl-firmware cxlbl.081.232
cxlbn-firmware cxlbn.081.232
cxtmm-firmware cxtmm.081.232
cxtpc-firmware cxtpc.081.232
cxtzj-firmware cxtzj.081.232
lhs60-firmware lhs60.jr.p760
lp-firmware lp.sp.p837
lr-firmware lr.fl.p838
lw80-firmware lw80.gm7.p234
mslbd-firmware mslbd.081.232
mslsg-firmware mslsg.081.232
msngm-firmware msngm.081.232
msngw-firmware msngw.081.232
mstgw-firmware mstgw.081.232
mxlbd-firmware mxlbd.081.232
mxlsg-firmware mxlsg.081.232
mxngm-firmware mxngm.081.232
mxtct-firmware mxtct.081.232
mxtgm-firmware mxtgm.081.232
mxtgw-firmware mxtgw.081.232
mxtpm-firmware mxtpm.081.232

Similar Threats

Exploit Protection

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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