UBUNTU-CVE-2026-3593
- Source
- https://ubuntu.com/security/CVE-2026-3593
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3593.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-3593
- Upstream
- Downstream
- Related
- Published
- 2026-05-20T00:00:00Z
- Modified
- 2026-06-30T18:17:59Z
- Severity
-
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
A use-after-free vulnerability exists within the DNS-over-HTTPS implementation. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1. BIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected.
- References
Affected packages
Ubuntu:25.10 / bind9
Package
- Name
- bind9
- Purl
- pkg:deb/ubuntu/bind9?arch=source&distro=questing
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1:9.20.11-1ubuntu2.4
Affected versions
1:9.*
1:9.20.4-3ubuntu1
1:9.20.4-3ubuntu2
1:9.20.4-3ubuntu3
1:9.20.9-2ubuntu1
1:9.20.10-1ubuntu1
1:9.20.11-1ubuntu1
1:9.20.11-1ubuntu2
1:9.20.11-1ubuntu2.1
1:9.20.11-1ubuntu2.2
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.20.11-1ubuntu2.4"
},
{
"binary_name": "bind9-dnsutils",
"binary_version": "1:9.20.11-1ubuntu2.4"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.20.11-1ubuntu2.4"
},
{
"binary_name": "bind9-libs",
"binary_version": "1:9.20.11-1ubuntu2.4"
},
{
"binary_name": "bind9-utils",
"binary_version": "1:9.20.11-1ubuntu2.4"
}
]
}
Ubuntu:26.04:LTS / bind9
Package
- Name
- bind9
- Purl
- pkg:deb/ubuntu/bind9?arch=source&distro=resolute
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1:9.20.18-1ubuntu2.1
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "bind9",
"binary_version": "1:9.20.18-1ubuntu2.1"
},
{
"binary_name": "bind9-dnsutils",
"binary_version": "1:9.20.18-1ubuntu2.1"
},
{
"binary_name": "bind9-host",
"binary_version": "1:9.20.18-1ubuntu2.1"
},
{
"binary_name": "bind9-libs",
"binary_version": "1:9.20.18-1ubuntu2.1"
},
{
"binary_name": "bind9-utils",
"binary_version": "1:9.20.18-1ubuntu2.1"
}
]
}