UBUNTU-CVE-2026-14191

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Source

https://ubuntu.com/security/CVE-2026-14191

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14191.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-14191

Upstream

CVE-2026-14191

Published

2026-07-01T04:16:00Z

Modified

2026-07-01T23:38:36.038893676Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

An out-of-bounds heap write exists in the RAR5 recovery-volume (.rev) parser in WinRAR and UnRAR (RecVolumes5::ReadHeader in recvol5.cpp). The RecItems vector is sized only when the first .rev file in a set is processed; subsequent .rev files supply an independent RecNum value that is validated against that file's own TotalCount field but never against the actual size of RecItems. A crafted set of two or more .rev files can therefore write an attacker-controlled 32-bit value (the header's RevCRC field) to RecItems[RecNum] at an attacker-controlled offset up to 65534 * sizeof(RecVolItem) bytes past the allocation, corrupting adjacent heap objects. Triggering requires the victim to run a recovery/test operation on an attacker-supplied .rev set (for example 'unrar t x.part1.rev', WinRAR 'Repair archive', or auto-recovery when extracting a volume set with a missing .rar part). This is the RAR5-path sibling of CVE-2023-40477 (which was fixed in the RAR3 path only in WinRAR 6.23). Fixed in WinRAR / RAR 7.23.

References

Affected packages

Ubuntu:16.04:LTS

unrar-nonfree

Package

Name: unrar-nonfree
Purl: pkg:deb/ubuntu/unrar-nonfree?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:5.*

1:5.3.2-1

1:5.3.2-1+deb9u1build0.16.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "unrar",
            "binary_version": "1:5.3.2-1+deb9u1build0.16.04.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14191.json"

Ubuntu:18.04:LTS

unrar-nonfree

Package

Name: unrar-nonfree
Purl: pkg:deb/ubuntu/unrar-nonfree?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:5.*

1:5.5.8-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "unrar",
            "binary_version": "1:5.5.8-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14191.json"

Ubuntu:20.04:LTS

unrar-nonfree

Package

Name: unrar-nonfree
Purl: pkg:deb/ubuntu/unrar-nonfree?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:5.*

1:5.6.6-2

1:5.6.6-2build1

1:5.6.6-2ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libunrar5",
            "binary_version": "1:5.6.6-2ubuntu0.1"
        },
        {
            "binary_name": "unrar",
            "binary_version": "1:5.6.6-2ubuntu0.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14191.json"

Ubuntu:22.04:LTS

unrar-nonfree

Package

Name: unrar-nonfree
Purl: pkg:deb/ubuntu/unrar-nonfree?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:6.*

1:6.0.5-1

1:6.0.7-6

1:6.1.2-1

1:6.1.3-1

1:6.1.3-2

1:6.1.4-1

1:6.1.5-1

1:6.1.5-1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libunrar-headers",
            "binary_version": "1:6.1.5-1ubuntu0.1"
        },
        {
            "binary_name": "libunrar5",
            "binary_version": "1:6.1.5-1ubuntu0.1"
        },
        {
            "binary_name": "unrar",
            "binary_version": "1:6.1.5-1ubuntu0.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14191.json"

Ubuntu:24.04:LTS

unrar-nonfree

Package

Name: unrar-nonfree
Purl: pkg:deb/ubuntu/unrar-nonfree?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:6.*

1:6.2.10-2

1:7.*

1:7.0.2-1

1:7.0.3-1

1:7.0.4-1

1:7.0.5-1

1:7.0.6-1

1:7.0.7-1

1:7.0.7-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libunrar-headers",
            "binary_version": "1:7.0.7-1build1"
        },
        {
            "binary_name": "libunrar5t64",
            "binary_version": "1:7.0.7-1build1"
        },
        {
            "binary_name": "unrar",
            "binary_version": "1:7.0.7-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14191.json"

Ubuntu:25.10

unrar-nonfree

Package

Name: unrar-nonfree
Purl: pkg:deb/ubuntu/unrar-nonfree?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.1.5-3

1:7.1.6-1

1:7.1.7-1

1:7.1.8-1

1:7.1.9-1

1:7.1.10-1

1:7.1.10-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libunrar-headers",
            "binary_version": "1:7.1.10-2"
        },
        {
            "binary_name": "libunrar5t64",
            "binary_version": "1:7.1.10-2"
        },
        {
            "binary_name": "unrar",
            "binary_version": "1:7.1.10-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14191.json"

Ubuntu:26.04:LTS

unrar-nonfree

Package

Name: unrar-nonfree
Purl: pkg:deb/ubuntu/unrar-nonfree?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.1.10-2

1:7.2.1-1

1:7.2.2-1

1:7.2.3-1

1:7.2.3-2

1:7.2.4-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libunrar-headers",
            "binary_version": "1:7.2.4-1"
        },
        {
            "binary_name": "libunrar5t64",
            "binary_version": "1:7.2.4-1"
        },
        {
            "binary_name": "unrar",
            "binary_version": "1:7.2.4-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14191.json"