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Fencer Vulns
critical 9.8

CVE-2026-8631 json

HP Linux Imaging and Printing Software – Potential Escalation of Privilege and Arbitrary Code Execution

published 2026-05-20 5 mo ago modified 2026-08-04 3 mo ago also EUVD-2026-31193

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

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.

Patch / fix

  • HP Inc HP Linux Imaging and Printing Software 3.26.4
  • Red Hat Red Hat Enterprise Linux 10 0:3.23.12-10.el10_2.4
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.23.12-8.el10_0.2
  • Red Hat Red Hat Enterprise Linux 8 0:3.18.4-13.el8_10
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:3.18.4-9.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:3.18.4-9.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:3.18.4-9.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:3.18.4-9.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:3.18.4-9.el8_8.1
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:3.18.4-9.el8_8.1
  • Red Hat Red Hat Enterprise Linux 9 0:3.21.2-6.el9_8.4
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:3.21.2-6.el9_2.1
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:3.21.2-6.el9_4.1
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:3.21.2-6.el9_6.1
  • hplip Debian 12 3.22.10+dfsg0-2+deb12u1
  • hplip Debian 13 3.22.10+dfsg0-8.1+deb13u1

debian advisories DEBIAN-CVE-2026-8631

  • hplip Ubuntu 22.04 LTS 3.21.12+dfsg0-1ubuntu0.1
  • hplip Ubuntu 24.04 LTS 3.23.12+dfsg0-0ubuntu5.1
  • hplip Ubuntu 25.10 3.24.4+dfsg0-0ubuntu5.2
  • hplip Ubuntu 26.04 LTS 3.24.4+dfsg0-0ubuntu8.1

ubuntu advisories UBUNTU-CVE-2026-8631

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • hplip RHEL 8 3.18.4-13.el8_10
  • hplip RHEL 9 3.21.2-6.el9_8.4
  • hplip RHEL 10.2 3.23.12-10.el10_2.4
  • hplip RHEL 8.4 EUS_LONG_LIFE, RHEL 8.4 AUS 3.18.4-9.el8_4.1
  • hplip RHEL 8.6 EUS_LONG_LIFE, RHEL 8.6 AUS 3.18.4-9.el8_6.1
  • hplip RHEL 8.8 TUS, RHEL 8.8 E4S 3.18.4-9.el8_8.1
  • hplip RHEL 9.4 E4S 3.21.2-6.el9_4.1
  • hplip RHEL 9.2 E4S 3.21.2-6.el9_2.1

red hat advisories RHSA-2026:48960RHSA-2026:48961RHSA-2026:48959RHSA-2026:48586RHSA-2026:48603RHSA-2026:48606

  • hplip SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 3.26.4-150400.3.22.1

suse advisories SUSE-SU-2026:2380-1

  • hplip openSUSE Tumbleweed 3.26.4-1.1

opensuse advisories openSUSE-SU-2026:10860-1

  • hplip AlmaLinux 9 3.21.2-6.el9_8.5.alma.1
  • hplip-libs AlmaLinux 9 3.21.2-6.el9_8.5.alma.1
  • hplip-common AlmaLinux 9 3.21.2-6.el9_8.5.alma.1
  • libsane-hpaio AlmaLinux 9 3.21.2-6.el9_8.5.alma.1
  • hplip AlmaLinux 8 3.18.4-14.el8_10.alma.1
  • hplip-gui AlmaLinux 8 3.18.4-14.el8_10.alma.1
  • hplip-libs AlmaLinux 8 3.18.4-14.el8_10.alma.1
  • hplip-common AlmaLinux 8 3.18.4-14.el8_10.alma.1

almalinux advisories ALSA-2026:40831ALSA-2026:40894ALSA-2026:39976ALSA-2026:26297ALSA-2026:26335

  • hplip Rocky Linux 10 3.23.12-10.el10_2.4
  • hplip Rocky Linux 9 3.21.2-6.el9_8.4
  • hplip Rocky Linux 8 3.18.4-13.el8_10

rocky linux advisories RLSA-2026:26228RLSA-2026:26297RLSA-2026:26335

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-8631 updated cvss 9.8

HPLIP: HPLIP: Arbitrary code execution and privilege escalation via integer overflow in hpcups

  • Red Hat Enterprise Linux 6 hpijs, hplip, hplip-gui, hplip-libs, hplip-common, libsane-hpaio
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) hplip 3.18.4-13.el8_10
    fixed: vendor fix RHSA-2026:26335
  • Red Hat Enterprise Linux AppStream (v. 9) hplip 3.21.2-6.el9_8.4
    fixed: vendor fix RHSA-2026:26297
  • Red Hat Enterprise Linux AppStream (v. 10) hplip 3.23.12-10.el10_2.4
    fixed: vendor fix RHSA-2026:26228
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) hplip 3.18.4-9.el8_4.1
    fixed: vendor fix RHSA-2026:48960
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) hplip 3.18.4-9.el8_6.1
    fixed: vendor fix RHSA-2026:48961
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) hplip 3.18.4-9.el8_8.1
    fixed: vendor fix RHSA-2026:48959
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) hplip 3.21.2-6.el9_2.1
    fixed: vendor fix RHSA-2026:48603
show 7 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) hplip 3.21.2-6.el9_4.1
    fixed: vendor fix RHSA-2026:48586
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) hplip 3.23.12-8.el10_0.2
    fixed: vendor fix RHSA-2026:48606
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) hplip 3.21.2-6.el9_6.1
    fixed: vendor fix RHSA-2026:48171
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) hplip 3.18.4-9.el8_4.1
    fixed: vendor fix RHSA-2026:48960
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) hplip 3.18.4-9.el8_6.1
    fixed: vendor fix RHSA-2026:48961
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) hplip 3.18.4-9.el8_8.1
    fixed: vendor fix RHSA-2026:48959
  • Red Hat Enterprise Linux 7 hpijs, hplip, hplip-gui, hplip-libs, hplip-common, libsane-hpaio Red Hat Enterprise Linux AppStream (v. 8) hplip-gui 3.18.4-13.el8_10, hplip-libs 3.18.4-13.el8_10, hplip-common 3.18.4-13.el8_10, libsane-hpaio 3.18.4-13.el8_10 Red Hat Enterprise Linux AppStream (v. 9) hplip-libs 3.21.2-6.el9_8.4, hplip-common 3.21.2-6.el9_8.4, libsane-hpaio 3.21.2-6.el9_8.4 Red Hat Enterprise Linux AppStream (v. 10) hplip-libs 3.23.12-10.el10_2.4, hplip-common 3.23.12-10.el10_2.4, libsane-hpaio 3.23.12-10.el10_2.4 Red Hat Enterprise Linux AppStream AUS (v.8.4) hplip-gui 3.18.4-9.el8_4.1, hplip-libs 3.18.4-9.el8_4.1, hplip-common 3.18.4-9.el8_4.1, libsane-hpaio 3.18.4-9.el8_4.1 Red Hat Enterprise Linux AppStream AUS (v.8.6) hplip-gui 3.18.4-9.el8_6.1, hplip-libs 3.18.4-9.el8_6.1, hplip-common 3.18.4-9.el8_6.1, libsane-hpaio 3.18.4-9.el8_6.1
    +8 more products
    Red Hat Enterprise Linux AppStream E4S (v.8.8) hplip-gui 3.18.4-9.el8_8.1, hplip-libs 3.18.4-9.el8_8.1, hplip-common 3.18.4-9.el8_8.1, libsane-hpaio 3.18.4-9.el8_8.1 Red Hat Enterprise Linux AppStream E4S (v.9.2) hplip-libs 3.21.2-6.el9_2.1, hplip-common 3.21.2-6.el9_2.1, libsane-hpaio 3.21.2-6.el9_2.1 Red Hat Enterprise Linux AppStream E4S (v.9.4) hplip-libs 3.21.2-6.el9_4.1, hplip-common 3.21.2-6.el9_4.1, libsane-hpaio 3.21.2-6.el9_4.1 Red Hat Enterprise Linux AppStream EUS (v. 10.0) hplip-libs 3.23.12-8.el10_0.2, hplip-common 3.23.12-8.el10_0.2, libsane-hpaio 3.23.12-8.el10_0.2 Red Hat Enterprise Linux AppStream EUS (v.9.6) hplip-libs 3.21.2-6.el9_6.1, hplip-common 3.21.2-6.el9_6.1, libsane-hpaio 3.21.2-6.el9_6.1 Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) hplip-gui 3.18.4-9.el8_4.1, hplip-libs 3.18.4-9.el8_4.1, hplip-common 3.18.4-9.el8_4.1, libsane-hpaio 3.18.4-9.el8_4.1 Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) hplip-gui 3.18.4-9.el8_6.1, hplip-libs 3.18.4-9.el8_6.1, hplip-common 3.18.4-9.el8_6.1, libsane-hpaio 3.18.4-9.el8_6.1 Red Hat Enterprise Linux AppStream TUS (v.8.8) hplip-gui 3.18.4-9.el8_8.1, hplip-libs 3.18.4-9.el8_8.1, hplip-common 3.18.4-9.el8_8.1, libsane-hpaio 3.18.4-9.el8_8.1
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
5 mo ago

Exploit prediction

1.81% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • HP Inc HP Linux Imaging and Printing Software
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.