Cyber 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 50th percentile
Risk Priority 72 floored blend · peak EPSS

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 Exploitation for Privilege Escalation (T1068); ranked in the top 50% 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

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
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-2023-23560Same product: Lexmark B2236
CVE-2023-22960Same product: Lexmark B2236
CVE-2026-26110Shared 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
  • V3.2.3
  • 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 mostly match
prevents

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect type-confusion vulnerabilities through fuzzing and static analysis.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates type-safe design and review that can catch type-confusion flaws.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify strong typing and interface contracts that reduce type confusion.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles promote type-safe languages and memory-safety mechanisms that mitigate type confusion.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly forbid unsafe type casts and require static-analysis checks for type confusion.

References