Integer overflow in Libtiff
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 he…
Vulnerability class: Integer Overflow
EPSS: 0.000 (9.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Libtiff
- Debian Debian_linux — versions 11.0
- Red Hat Enterprise Linux 10 — versions 0:4.6.0-6.el10_1.3, 0:4.6.0-8.el10_2.1
- Red Hat Enterprise Linux 10.0 Extended Update Support — versions 0:4.6.0-6.el10_0.3
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:3.9.4-15.el8_10, 0:4.0.9-4.el8_10, 0:4.0.9-37.el8_10
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support — versions 0:4.0.9-18.el8_4.2, 0:3.9.4-13.el8_4.2
- Red Hat Enterprise Linux 8.4 Extended Update Support Long-life Add-on — versions 0:4.0.9-18.el8_4.2, 0:3.9.4-13.el8_4.2
- Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support — versions 0:4.0.9-21.el8_6.2, 0:3.9.4-13.el8_6.2
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Third Party Advisory, Issue Tracking)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2026-4775?
- CVE-2026-4775 is a high-severity vulnerability in Libtiff, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2026-03-24.
- How severe is CVE-2026-4775?
- High severity. CVSS v3 base score is 7.8 out of 10.