UBUNTU-CVE-2026-68765

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Source
https://ubuntu.com/security/CVE-2026-68765
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68765.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-68765
Upstream
Published
2026-08-17T21:16:00Z
Modified
2026-08-19T13:31:58Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H CVSS Calculator
  • 5.2 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

hashcat master branch builds after v7.1.2 contain a heap buffer overflow vulnerability in the KeePass AESKDF/KDBX v4 module (module 34301) that allows attackers to corrupt adjacent heap memory by supplying an oversized ninth hash field token. The module accepts up to 600 hex characters for the ninth token field but decodes it into a fixed 256-byte buffer with no length check, allowing a maximal input to write up to 44 bytes past the buffer boundary into adjacent esalt fields and heap chunk metadata, potentially enabling heap corruption or memory access violations.

References

Affected packages

Ubuntu:18.04:LTS / hashcat

Package

Name
hashcat
Purl
pkg:deb/ubuntu/hashcat?arch=source&distro=bionic

Affected ranges

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

Affected versions

3.*
3.60-1
4.*
4.0.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hashcat",
            "binary_version": "4.0.1-1"
        },
        {
            "binary_name": "hashcat-data",
            "binary_version": "4.0.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68765.json"

Ubuntu:20.04:LTS / hashcat

Package

Name
hashcat
Purl
pkg:deb/ubuntu/hashcat?arch=source&distro=focal

Affected ranges

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

Affected versions

5.*
5.1.0+ds1-1
5.1.0+ds1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hashcat",
            "binary_version": "5.1.0+ds1-2"
        },
        {
            "binary_name": "hashcat-data",
            "binary_version": "5.1.0+ds1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68765.json"

Ubuntu:22.04:LTS / hashcat

Package

Name
hashcat
Purl
pkg:deb/ubuntu/hashcat?arch=source&distro=jammy

Affected ranges

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

Affected versions

6.*
6.1.1+ds1-1
6.2.5+ds1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hashcat",
            "binary_version": "6.2.5+ds1-2"
        },
        {
            "binary_name": "hashcat-data",
            "binary_version": "6.2.5+ds1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68765.json"

Ubuntu:24.04:LTS / hashcat

Package

Name
hashcat
Purl
pkg:deb/ubuntu/hashcat?arch=source&distro=noble

Affected ranges

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

Affected versions

6.*
6.2.6+ds1-1
6.2.6+ds1-1build1
6.2.6+ds1-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hashcat",
            "binary_version": "6.2.6+ds1-1build2"
        },
        {
            "binary_name": "hashcat-data",
            "binary_version": "6.2.6+ds1-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68765.json"

Ubuntu:26.04:LTS / hashcat

Package

Name
hashcat
Purl
pkg:deb/ubuntu/hashcat?arch=source&distro=resolute

Affected ranges

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

Affected versions

6.*
6.2.6+ds2-1
7.*
7.1.2+ds1-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hashcat",
            "binary_version": "7.1.2+ds1-3"
        },
        {
            "binary_name": "hashcat-data",
            "binary_version": "7.1.2+ds1-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68765.json"