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Highest advisory severityCritical 1 vendor · 2 advisories

CVE-2026-8631: Arbitrary code execution and privilege escalation via integer overflow in hpcups

Not in the CISA KEV catalog.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

CVE-2026-8631 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Critical
CVSS base score
9.8 (Red Hat)
CVSS vector
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (Red Hat)
Weakness
CWE-190
Fixed releases
  • Red Hat: hplip-0:3.23.12-10.el10_2.4, hplip-0:3.23.12-8.el10_0.2, hplip-0:3.18.4-13.el8_10, hplip-0:3.18.4-9.el8_4.1, hplip-0:3.18.4-9.el8_6.1, hplip-0:3.18.4-9.el8_8.1 and 14 more in the advisory
Vendor advisories
2 from Red Hat
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-8631; bulletin-wide values are not repeated here.

Is CVE-2026-8631 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-8631 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-8631?

Upgrade to a fixed release named by the vendor:

  • Red Hat: hplip-0:3.23.12-10.el10_2.4, hplip-0:3.23.12-8.el10_0.2, hplip-0:3.18.4-13.el8_10, hplip-0:3.18.4-9.el8_4.1, hplip-0:3.18.4-9.el8_6.1, hplip-0:3.18.4-9.el8_8.1

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Alert me about Red Hat

Vendor advisory comparison

Red Hat

2 advisories
  • Advisory severityCritical9.8

    Critical [CVE-2026-14544 +1] Incomplete Fix for CVE-2026-8631

    CVE-2026-14544Source published Source updated

    This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    A flaw was found in HPLIP (HP Linux Imaging and Printing Software). This vulnerability, an incomplete fix for CVE-2026-8631, may allow a remote attacker to escalate privileges or achieve arbitrary code execution. This can occur through an integer overflow in the hpcups processing path when handling specially crafted print data. A remote attacker who can submit print job content to the hpcups filter path may achieve arbitrary code execution or privilege escalation within user used for starting filters (user 'lp' by default) on systems using HPLIP for printing. Red Hat severity: Important — CVSS 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-190. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat fixing…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 8
    • Red Hat Enterprise Linux 9
    • Red Hat package: hplip
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • hplip-0:3.23.12-10.el10_2.5
    • hplip-0:3.18.4-14.el8_10
    • hplip-0:3.21.2-6.el9_8.5
    • RHSA-2026:39976

    2 more entries in the full advisory.

    Mitigation guidance
    • To mitigate this vulnerability, consider restricting access to the printing services to trusted users and networks. If HPLIP is not required, removing the `hplip` package can eliminate the exposure. Note that removing `hplip` may affect printing functionality.
    Full advisory and evidenceOpen source bulletin
  • Advisory severityCritical9.8

    Critical [CVE-2026-8631] Arbitrary code execution and privilege escalation via integer overflow in hpcups

    CVE-2026-8631Source published Source updated

    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. A remote attacker who can submit print job content to the hpcups filter path may achieve arbitrary code execution or privilege escalation on systems using HPLIP for printing. Red Hat severity: Important — CVSS 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-190. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10.0 Extended Update Support
    • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
    • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
    • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

    8 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • hplip-0:3.23.12-10.el10_2.4
    • hplip-0:3.23.12-8.el10_0.2
    • hplip-0:3.18.4-13.el8_10
    • hplip-0:3.18.4-9.el8_4.1

    16 more entries in the full advisory.

    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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