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unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis

🗓️ 17 Sep 2026 10:22:12Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

Remote code execution in Unbound via CNAME synthesis heap corruption through upstream DNS responses.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
freebsd
FreeBSD
Unbound -- multiple vulnerabilities
15 Sep 202600:00
–freebsd
alpinelinux
AlpineLinux
CVE-2026-82717
16 Sep 202608:31
–alpinelinux
almalinux
AlmaLinux
Critical: unbound security update
23 Sep 202600:00
–almalinux
cbl_mariner
CBLMariner
CVE-2026-82717 affecting package unbound for versions less than 1.26.1-1
18 Sep 202614:58
–cbl_mariner
circl
Circl
CVE-2026-82717
16 Sep 202619:10
–circl
cve
CVE
CVE-2026-82717
16 Sep 202608:31
–cve
cvelist
Cvelist
CVE-2026-82717 CNAME synthesis could lead to heap corruption
16 Sep 202608:31
–cvelist
debian
Debian
[SECURITY] [DSA 6507-1] unbound security update
19 Sep 202615:00
–debian
debiancve
Debian CVE
CVE-2026-82717
16 Sep 202608:31
–debiancve
nessus
Tenable Nessus
Debian dsa-6507 : libunbound-dev - security update
21 Sep 202600:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64python3-unbound1.26.1-1.hum1python3-unbound-1.26.1-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64python3-unbound1.26.1-1.hum1python3-unbound-1.26.1-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64unbound1.26.1-1.hum1unbound-1.26.1-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64unbound1.26.1-1.hum1unbound-1.26.1-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64unbound-anchor1.26.1-1.hum1unbound-anchor-1.26.1-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64unbound-anchor1.26.1-1.hum1unbound-anchor-1.26.1-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64unbound-devel1.26.1-1.hum1unbound-devel-1.26.1-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64unbound-devel1.26.1-1.hum1unbound-devel-1.26.1-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64unbound-dracut1.26.1-1.hum1unbound-dracut-1.26.1-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64unbound-dracut1.26.1-1.hum1unbound-dracut-1.26.1-1.hum1.x86_64.rpm
Rows per page

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24 Sep 2026 11:16Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.19.8
CVSS 49.5
EPSS0.00782
SSVC
5