CVE-2023-26065

Unauthenticated code execution via putinterval integer overflow

Published Apr 10, 2023 · Updated Feb 11, 2025

Integer overflow in the PostScript interpreter in Lexmark printers allows remote attackers to execute arbitrary code via a crafted job. The putinterval command fails to validate user-supplied values before calculating a buffer allocation, allowing the size calculation to overflow. No authentication or user interaction is required; reachability is limited to a network-adjacent path in the published exploit assessment.

CVSS severity9.0
Critical
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the PostScript interpreter in Lexmark printers allows remote attackers to execute arbitrary code via a crafted job. The putinterval command fails to validate user-supplied values before calculating a buffer allocation, allowing the size calculation to overflow. No authentication or user interaction is required; reachability is limited to a network-adjacent path in the published exploit assessment.

The record

CVE
CVE-2023-26065
Published
Apr 10, 2023
Updated
Feb 11, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190, CAPEC-92, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 11, 2025Record 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8Zero Day InitiativeCVSS:3.0/AV:A/AC:L/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
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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-190Integer Overflow or Wraparound
CAPEC-92Forced Integer Overflow
T1210Exploitation of Remote Services

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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