CVE-2026-4682

Adjacent-network code execution via malformed WSD scans

Published Apr 15, 2026 · Updated Apr 15, 2026

Stack-based buffer overflow in HP DeskJet All-in-One firmware before 2612A allows remote attackers on an adjacent network to execute code via WSD Scan. The MFP improperly validates and handles specially crafted WSD Scan requests, overflowing a stack buffer in an otherwise undisclosed processing locus. No credentials or user interaction are required, but the attacker must reach the printer on an adjacent network with WSD Scan enabled.

CVSS severity8.7
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in HP DeskJet All-in-One firmware before 2612A allows remote attackers on an adjacent network to execute code via WSD Scan. The MFP improperly validates and handles specially crafted WSD Scan requests, overflowing a stack buffer in an otherwise undisclosed processing locus. No credentials or user interaction are required, but the attacker must reach the printer on an adjacent network with WSD Scan enabled.

The record

CVE
CVE-2026-4682
Published
Apr 15, 2026
Updated
Apr 15, 2026
Vendor
Plantronics
Product
HP DeskJet Ink Advantage 4200 All-in-One Printer series
Classifications
CWE-121, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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?

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

  1. Affected versionversion=0 <<2612A

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Plantronics · HP DeskJet Ink Advantage 4200 All-in-One Printer seriesversion=0 <<2612A
Plantronics · HP DeskJet Ink Advantage Ultra 4900 seriesversion=0 <<2612A
Plantronics · HP DeskJet 2800e All-in-One Printer seriesversion=0 <<2612A
Plantronics · HP DeskJet 4200 All-in-One Printer seriesversion=0 <<2612A
Plantronics · HP DeskJet Ink Advantage 2800 All-in-One Printer seriesversion=0 <<2612A
Plantronics · HP DeskJet 4200e All-in-One Printer seriesversion=0 <<2612A

Published CVSS scores

8.7HP Inc.CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer 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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