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HP has fixed two serious vulnerabilities in HP Linux Imaging and Printing Software (HPLIP) affecting versions earlier than 3.26.4, including a critical flaw that could enable remote arbitrary code execution and a high-severity issue that could lead to local privilege escalation. HP published the advisory HPSBPI04118 and released HPLIP 3.26.4 as the patched version.
The most severe issue, CVE-2026-8631, is an integer buffer overflow in the hpcups print request processing path that can be exploited remotely and without authentication using specially crafted print data. A second flaw, CVE-2026-8632, stems from improper neutralization and could be abused by a local low-privileged user through a crafted print request to execute arbitrary commands on the host operating system. Organizations using HPLIP on Linux systems should upgrade to 3.26.4 or later immediately.
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2 events from the most recent confirmed update back to the earliest known activity.
HP published a security bulletin covering two vulnerabilities in HP Linux Imaging and Printing Software: CVE-2026-8631, a critical integer buffer overflow, and CVE-2026-8632, a high-severity improper neutralization flaw. The issues can enable privilege escalation and arbitrary code execution or command execution on affected systems.
HP's developer portal lists HPLIP version 3.26.4. Later advisories state that versions earlier than 3.26.4 are affected and recommend upgrading to this release or later.
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HP disclosed two serious vulnerabilities in **HP Linux Imaging and Printing (HPLIP)** that can lead to arbitrary code execution and privilege escalation on Linux hosts using the widely deployed printer and scanner framework. The most severe issue, **`CVE-2026-8631`** with **CVSS 9.3**, is tied to an integer overflow in the **`hpcups`** processing path and could allow an unauthenticated network attacker to send crafted print data that triggers remote code execution or elevated privileges on the target system. A second flaw, **`CVE-2026-8632`** with **CVSS 8.5**, affects script wrappers through improper input validation and allows a local low-privileged user to execute commands as **root**. HP’s advisory **`HPSBPI04118 Rev. 1`** attributes the issues to command injection and buffer overflow classes and says **HPLIP `3.26.4`** contains the fixes. Because HPLIP is commonly preinstalled in enterprise Linux distributions, organizations were urged to inventory affected systems, limit exposure of print service ports, and update software and firmware promptly.
Jul 3, 2026
A critical vulnerability in HP Linux Imaging and Printing (**HPLIP**), tracked as **`CVE-2026-14544`**, allows unauthenticated remote attackers to trigger arbitrary code execution, privilege escalation, denial of service, or memory corruption by sending specially crafted print data to the **`hpcups`** processing path. The bug is an integer overflow (**`CWE-190`**) and has been rated **CVSS 9.8**. Researchers and downstream reporting described it as an incomplete fix for the earlier **`CVE-2026-8631`**, meaning prior remediation did not fully eliminate the underlying issue. The flaw affects HPLIP versions prior to **`3.26.4`** and has broad exposure because HPLIP is widely deployed on Linux systems that support HP printers. Upstream reportedly fixed the issue in **`3.26.4`**, while Linux vendors including Ubuntu, Debian, SUSE/openSUSE, Oracle Linux, and Red Hat have identified affected products or begun issuing and backporting updates; Red Hat said **RHEL 8, 9, and 10** are affected, while **RHEL 6 and 7** are not. Until patches are fully available across distributions, defenders have been urged to apply vendor security updates as they are released, restrict network exposure to printing services such as CUPS, isolate print servers, monitor print activity, and remove HPLIP where it is not required.
Jul 9, 2026
**Canon** disclosed patches for multiple **remote code execution** vulnerabilities affecting the *imageCLASS MF654Cdw* printer, following coordinated publication through **Zero Day Initiative** advisories tied to *Pwn2Own*. The flaws allow **network-adjacent, unauthenticated attackers** to execute arbitrary code in the context of the device, and each advisory assigns a **CVSS 8.8** severity rating. The vulnerabilities were reported in November 2025 and publicly released in March 2026, with Canon directing customers to its product security guidance for updates. The disclosed issues affect several distinct attack surfaces on the printer. **CVE-2025-14232** is a stack-based buffer overflow in **XPS** file parsing, **CVE-2025-14235** is an out-of-bounds write in **TrueType font** parsing, **CVE-2025-14234** is a heap-based buffer overflow triggered by a crafted font in a **PJCC** request within the **CADM** service listening on `TCP/9013`, and **CVE-2025-14236** is a stack-based buffer overflow in the `dtdc_addr_importSub` method. Together, the advisories indicate that malicious print content or protocol requests could be used to compromise exposed devices, reinforcing the need to patch internet-reachable and internally accessible printers promptly.
Jun 29, 2026