Stack-based buffer overflow in HP Development Company products - CVE-2026-4682

Vulnerability identifier: #VU128252

CSH Severity: Medium

CVSS v4: 8.7 [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]

CVE-ID: CVE-2026-4682

CWE-ID: CWE-121

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling a JobStatusEvent. A remote attacker on the local network can send specially crafted SOAP requests, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

HP DeskJet 2800e All-in-One Printer series
HP DeskJet 4200 All-in-One Printer series
HP DeskJet Ink Advantage 4200 All-in-One Printer series
HP DeskJet 4200e All-in-One Printer series
HP DeskJet Ink Advantage Ultra 4900 series
HP DeskJet Ink Advantage 2800 All-in-One Printer series

Install updates from vendor's website.

HP DeskJet 2800e All-in-One Printer series - update to 2612A
HP DeskJet 4200 All-in-One Printer series - update to 2612A
HP DeskJet Ink Advantage 4200 All-in-One Printer series - update to 2612A
HP DeskJet 4200e All-in-One Printer series - update to 2612A
HP DeskJet Ink Advantage Ultra 4900 series - update to 2612A
HP DeskJet Ink Advantage 2800 All-in-One Printer series - update to 2612A

• https://www.zerodayinitiative.com/advisories/ZDI-26-280/
• https://support.hp.com/us-en/document/ish_14744451-14744475-16/hpsbpi04110

• Remote code execution in HP DeskJet All In One devices