Security Resilience

CVE-2023-26063

Memory Safety in Lexmark Lw80 Firmware ≤ lw80.sb7.p234

Memory Safety
Published
10 April 2023
Modified
11 February 2025
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0071 52th percentile
Risk Priority 72 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-26063 is a critical-severity Type Confusion (CWE-843) vulnerability in Lexmark Lw80 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked in the top 48% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

Certain Lexmark devices through 2023-02-19 access a Resource By Using an Incompatible Type.

CWE(s)
CWE-843

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1011.001 Exfiltration Over Bluetooth Exfiltration
Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-26066Same product: Lexmark 6500E
CVE-2023-26065Same product: Lexmark 6500E
CVE-2023-26064Same product: Lexmark 6500E
CVE-2023-26070Same product: Lexmark 6500E
CVE-2023-26068Same product: Lexmark B2236
CVE-2023-26069Same product: Lexmark B2236
CVE-2023-26067Same product: Lexmark B2236
CVE-2026-28983Shared CWE-843
CVE-2026-77499Shared CWE-843
CVE-2011-0611Shared CWE-843

Affected Assets

lexmark
cxtpc firmware
≤ cxtpc.081.232
lexmark
cstpc firmware
≤ cstpc.081.232
lexmark
mxtct firmware
≤ mxtct.081.232
lexmark
mxtpm firmware
≤ mxtpm.081.232
lexmark
cxtmm firmware
≤ cxtmm.081.232
lexmark
mslsg firmware
≤ mslsg.081.232
lexmark
mxlsg firmware
≤ mxlsg.081.232
lexmark
mslbd firmware
≤ mslbd.081.232
lexmark
mxlbd firmware
≤ mxlbd.081.232
lexmark
msngm firmware
≤ msngm.081.232
+16 more product configuration(s) — see NVD for full list

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.5.2
  • V15.3.5

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly prevent type-confusion flaws via safe typing, static analysis, and code review while the control itself addresses many additional weaknesses.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References