CVE-2021-42640Known exploitationNetwork attack vector

Unauthenticated printer driver reassignment via IDOR

Published Feb 2, 2022 · Updated Jul 9, 2026

IDOR in PrinterLogic Web Stack 19.1.1.13 SP9 and earlier allows remote attackers to reassign drivers for any managed printer. The driver-assignment interface accepts printer and driver object references without enforcing authorization before changing their association. Access to a privileged network position is required; the flaw changes which existing driver package a managed printer delivers.

CVSS severity9.1
Critical
EPSS probability2.04%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IDOR in PrinterLogic Web Stack 19.1.1.13 SP9 and earlier allows remote attackers to reassign drivers for any managed printer. The driver-assignment interface accepts printer and driver object references without enforcing authorization before changing their association. Access to a privileged network position is required; the flaw changes which existing driver package a managed printer delivers.

The record

CVE
CVE-2021-42640
Published
Feb 2, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-668, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 24, 2022Exploitation reportedYahoo PrinterLogic multi-vulnerability exploit-chain demonstration
  2. Feb 2, 2022CVE publishedPublication date reported by the CVE source.
  3. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
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.

Reported exploitation

Technologies

Your stack

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Your stack

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