Vulnary
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Critical· 9.3

CVE-2026-8631

A critical flaw in HP's Linux Imaging and Printing Software lets attackers craft print jobs that trigger an integer overflow, potentially giving them elevated privileges or the ability to run arbitrary code. The bug is in the hpcups processing path and could be exploited by anyone who can send print data to the affected system. No public exploit is known, but the vulnerability is severe enough to warrant immediate attention.

publishedMay 20, 2026
last modifiedAug 4, 2026
sourcesNVD
severity · cvss
9.3
critical · how bad it is
exploitation · epss
2%
76th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 6, 2026

No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.

01

Who is affected

HP Linux Imaging and Printing Software (all versions) on Linux systems.

02

Real-world impact

An attacker who can send malicious print data could gain root privileges or execute arbitrary code on the target machine, compromising the entire system.

03

Why this severity

The CVSS score of 9.3 reflects the vulnerability's high impact on confidentiality, integrity, and availability, combined with no authentication or user interaction required. The integer overflow can be triggered remotely, giving attackers full control.

04

What to do about it

no official fix yet

No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.

No fix documented in sources

05

Timeline

  1. May 20, 2026 · May 20, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Aug 4, 2026 · 9h ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Attack requirementsNone
Privileges requiredNone
User interactionNone needed
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →