DEBIAN-CVE-2026-18495

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Source
https://security-tracker.debian.org/tracker/CVE-2026-18495
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18495.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-18495
Upstream
  • CVE-2026-18495
Published
2026-09-11T18:16:56Z
Modified
2026-09-17T08:47:25Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.

References

Affected packages

Debian:12 / tiff

Package

Name
tiff
Purl
pkg:deb/debian/tiff?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.5.0-6
4.5.0-6+deb12u1
4.5.0-6+deb12u2
4.5.0-6+deb12u3
4.5.0-6+deb12u4
4.5.1~rc3-1
4.5.1-1
4.5.1+git230720-1
4.5.1+git230720-2
4.5.1+git230720-3
4.5.1+git230720-4
4.5.1+git230720-5
4.6.0-1
4.6.0-2
4.7.0-1
4.7.0-2
4.7.0-3
4.7.0-4
4.7.0-5
4.7.1-1
4.7.1-2
4.7.1-3
4.7.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18495.json"

Debian:13 / tiff

Package

Name
tiff
Purl
pkg:deb/debian/tiff?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.7.0-3
4.7.0-3+deb13u1
4.7.0-3+deb13u2
4.7.0-3+deb13u3
4.7.0-4
4.7.0-5
4.7.1-1
4.7.1-2
4.7.1-3
4.7.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18495.json"

Debian:14 / tiff

Package

Name
tiff
Purl
pkg:deb/debian/tiff?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.7.1-1

Affected versions

4.*
4.7.0-3
4.7.0-4
4.7.0-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18495.json"