DEBIAN-CVE-2026-103680

Source
https://security-tracker.debian.org/tracker/CVE-2026-103680
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-103680.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-103680
Upstream
Published
2026-10-01T12:17:15Z
Modified
2026-10-02T17:00:07Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

A flaw was found in tnef. A heap-based buffer overflow can occur in the find_free_number() function when generating numbered backup suffixes for duplicate filenames. When numbered backups are enabled and file overwriting is disabled, an attacker can supply a specially crafted Transport Neutral Encapsulation Format (TNEF) file with an excessive number of colliding attachment filenames, causing the numeric counter to write past the allocated memory buffer. This issue may result in an application crash, leading to a Denial of Service (DoS), or potentially arbitrary code execution.

References

Affected packages

Debian:12 / tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.18-3
1.4.18-4
1.4.18-5
1.4.18-6

Ecosystem specific

{
    "urgency":  "unimportant"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-103680.json"

Debian:13 / tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.18-4
1.4.18-5
1.4.18-6

Ecosystem specific

{
    "urgency":  "unimportant"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-103680.json"

Debian:14 / tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.18-4
1.4.18-5
1.4.18-6

Ecosystem specific

{
    "urgency":  "unimportant"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-103680.json"