CVE-2026-18243

Unauthenticated print-preview disclosure

Published Aug 3, 2026 · Updated Aug 3, 2026

Cross-site scripting in HP DesignJet T3500 firmware before AENEAS_04_09_09.1 allows remote attackers to view print-job previews. HP has not disclosed the firmware handler, attacker-controlled field, or output-encoding operation involved. Exploitation requires adjacent-network access and active user interaction; the reported consequence is disclosure of print-job previews.

CVSS severity6.9
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site scripting in HP DesignJet T3500 firmware before AENEAS_04_09_09.1 allows remote attackers to view print-job previews. HP has not disclosed the firmware handler, attacker-controlled field, or output-encoding operation involved. Exploitation requires adjacent-network access and active user interaction; the reported consequence is disclosure of print-job previews.

The record

CVE
CVE-2026-18243
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
Plantronics
Product
HP DesignJet T3500 Production Multifunction Printer
Classifications
CWE-79
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2026Record 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <AENEAS_04_09_09.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Plantronics · HP DesignJet T3500 Production Multifunction Printerversion=0 <AENEAS_04_09_09.1

Published CVSS scores

6.9HP Inc.CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/SC:N/SI:N/SA: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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo