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    CVE-2026-4775

    A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.

    Published:Mar 24, 2026
    Last Modified:Jun 30, 2026
    EPS:Mar 24, 2026
    EPSS Score:0.00553
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Libtiff
    Product
    Libtiff
    Vendor
    Redhat
    Product
    Ai Inference Server
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Hardened Images
    Vendor
    Redhat
    Product
    Hummingbird
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Eus Long Life
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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    References

    https://access.redhat.com/errata/RHSA-2026:12265
    https://access.redhat.com/errata/RHSA-2026:12271
    https://access.redhat.com/errata/RHSA-2026:14929
    https://access.redhat.com/errata/RHSA-2026:16055
    https://access.redhat.com/errata/RHSA-2026:19150
    https://access.redhat.com/errata/RHSA-2026:19363
    https://access.redhat.com/errata/RHSA-2026:19585
    https://access.redhat.com/errata/RHSA-2026:19586
    https://access.redhat.com/errata/RHSA-2026:19604
    https://access.redhat.com/errata/RHSA-2026:19608
    https://access.redhat.com/errata/RHSA-2026:19609
    https://access.redhat.com/errata/RHSA-2026:19657
    https://access.redhat.com/errata/RHSA-2026:19659
    https://access.redhat.com/errata/RHSA-2026:19702
    https://access.redhat.com/errata/RHSA-2026:20583
    https://access.redhat.com/errata/RHSA-2026:20585
    https://access.redhat.com/errata/RHSA-2026:20591
    https://access.redhat.com/errata/RHSA-2026:20592
    https://access.redhat.com/errata/RHSA-2026:24992
    https://access.redhat.com/errata/RHSA-2026:25096
    https://access.redhat.com/errata/RHSA-2026:25910
    https://access.redhat.com/errata/RHSA-2026:30078
    https://access.redhat.com/errata/RHSA-2026:30087
    https://access.redhat.com/errata/RHSA-2026:30088
    https://access.redhat.com/errata/RHSA-2026:30089
    https://access.redhat.com/errata/RHSA-2026:30349
    https://access.redhat.com/errata/RHSA-2026:33388
    https://access.redhat.com/security/cve/CVE-2026-4775
    https://bugzilla.redhat.com/show_bug.cgi?id=2450768
    https://lists.debian.org/debian-lts-announce/2026/04/msg00016.html
    https://access.redhat.com/errata/RHSA-2026:12265
    https://access.redhat.com/errata/RHSA-2026:12271
    https://access.redhat.com/errata/RHSA-2026:14929
    https://access.redhat.com/errata/RHSA-2026:16055
    https://access.redhat.com/errata/RHSA-2026:19150
    https://access.redhat.com/errata/RHSA-2026:19363
    https://access.redhat.com/errata/RHSA-2026:19585
    https://access.redhat.com/errata/RHSA-2026:19586
    https://access.redhat.com/errata/RHSA-2026:19604
    https://access.redhat.com/errata/RHSA-2026:19608
    https://access.redhat.com/errata/RHSA-2026:19609
    https://access.redhat.com/errata/RHSA-2026:19657
    https://access.redhat.com/errata/RHSA-2026:19659
    https://access.redhat.com/errata/RHSA-2026:19702
    https://access.redhat.com/errata/RHSA-2026:20583
    https://access.redhat.com/errata/RHSA-2026:20585
    https://access.redhat.com/errata/RHSA-2026:20591
    https://access.redhat.com/errata/RHSA-2026:20592
    https://access.redhat.com/errata/RHSA-2026:24992
    https://access.redhat.com/errata/RHSA-2026:25096
    https://access.redhat.com/errata/RHSA-2026:25910
    https://access.redhat.com/errata/RHSA-2026:30078
    https://access.redhat.com/errata/RHSA-2026:30087
    https://access.redhat.com/errata/RHSA-2026:30088
    https://access.redhat.com/errata/RHSA-2026:30089
    https://access.redhat.com/errata/RHSA-2026:30349
    https://access.redhat.com/security/cve/CVE-2026-4775
    https://bugzilla.redhat.com/show_bug.cgi?id=2450768
    https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4775.json

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High