Critical severity · published May 20, 2026
CVE-2026-8631
HP Linux Imaging and Printing Software – Potential Escalation of Privilege and Arbitrary Code Execution
9.8
CVSS
1.8%
EPSS
No
On KEV
Description
A potential security vulnerability has been identified in the HP Linux Imaging and Printing Software. This potential vulnerability may allow escalation of privileges and/or arbitrary code execution via an integer overflow in the hpcups processing path when handling crafted print data.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HL
HP Linux Imaging and Printing Software · HP Inc
before 3.26.4 · source: vendor
LI
Linux Imaging And Printing · HP
before 3.26.4 · source: NVD
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 6 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.8 Telecommunications Update Service · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions · Red Hat
All versions, or not specified · source: CISA
Affected product
HL
HP Linux Imaging and Printing Software
HP Inc
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8631
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-8631
Vendor Advisory
https://support.hp.com/us-en/document/ish_14942099-14942126-16/hpsbpi04118
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:26228
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:26297
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:26335
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:48171
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:48586
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