HighFix available
bind9, bind9-libs and 1 more products — security advisory
An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.
- Products
- bind9, bind9-libs, isc-dhcp
- Affected versions
- 1:9.11.16+dfsg-3~build1, 1:9.11.16+dfsg-3~ubuntu1, 1:9.11.19+dfsg-2.1ubuntu1, 1:9.11.19+dfsg-2.1ubuntu2, 1:9.11.19+dfsg-2.1ubuntu3, 1:9.20.11-1ubuntu2, 1:9.20.11-1ubuntu3, 1:9.20.18-1ubuntu1, 1:9.20.18-1ubuntu2, 1:9.20.18-1ubuntu2.1, 1:9.20.23-1ubuntu1, 1:9.20.24-1ubuntu0.1, 1:9.20.24-1ubuntu0.2, 1:9.20.24-1ubuntu0.3, 1:9.20.24-1ubuntu2, 1:9.20.24-1ubuntu3, 4.3.5-3ubuntu2, 4.3.5-3ubuntu3, 4.3.5-3ubuntu4, 4.3.5-3ubuntu5, 4.3.5-3ubuntu6, 4.3.5-3ubuntu7, 4.3.5-3ubuntu7.1, 4.3.5-3ubuntu7.2, 4.3.5-3ubuntu7.3, 4.3.5-3ubuntu7.4, 4.4.3-P1-2ubuntu5, 4.4.3-P1-4ubuntu1, 4.4.3-P1-4ubuntu2
- Fixed versions
- 1:9.20.24-1ubuntu0.4
- CVEs
- CVE-2026-77692
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:19 UTC · Revision 1
Source evidence
An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.
osv:UBUNTU-CVE-2026-77692
isc-dhcp
Fixed versions: Not specified
bind9-libs
Fixed versions: Not specified
bind9-libs
Fixed versions: Not specified
isc-dhcp
Fixed versions: Not specified
bind9
Fixed versions: Not specified
bind9
Fixed versions: 1:9.20.24-1ubuntu0.4
isc-dhcp
Fixed versions: Not specified
Complete source record
{
"id": "0045a67dc9516257fc5025ba63640d89b54049df841be39d2243f6fce537bcfc",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-77692",
"method": "structured",
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"title": "UBUNTU-CVE-2026-77692",
"summary": "An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.",
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{
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"evidence": "/affected/5/versions"
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{
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],
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"structured": {
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"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
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{
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{
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{
"binary_name": "libisc1105",
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"availability": "No subscription required"
}
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{
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},
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{
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{
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},
{
"binary_name": "isc-dhcp-server",
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{
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],
"modified": "2026-10-17T13:01:08.293679522Z",
"provider": "osv",
"upstream": [
"CVE-2026-77692"
],
"references": [
"https://ubuntu.com/security/CVE-2026-77692",
"https://www.cve.org/CVERecord?id=CVE-2026-77692",
"https://kb.isc.org/docs/cve-2026-77692",
"https://ubuntu.com/security/notices/USN-8929-1"
]
},
"related_cves": [
{
"value": "CVE-2026-77692",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361053,
"published_at": "2026-09-16T14:17:00+00:00"
}