Vulnerability · SUSE-SU-2026:24135-1
Security update for unbound
Published Oct 9, 2026 · catalog updated Oct 15, 2026 · Security update for unbound
Open the advisory
Exploitation likelihood is not on this record for SUSE-SU-2026:24135-1. A missing EPSS score is not a low risk. Compare Security update for unbound with the linked advisory before you change production.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Security update for unbound).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- EPSS is missing. A missing score is not a low risk.
- Severity
- Unknown—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- Awaiting synchronization with FIRST
- Remediation
- Advisory link
- Affected products
- SUSE:Linux Micro 6.0 unbound
This update for unbound fixes the following issues: - CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' (bsc#1280403). - CVE-2026-77955: Possible ZONEMD verification bypass window (bsc#1280404). - CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission (bsc#1280405). - CVE-2026-80225: Possible degradation of service from continuous queries on the same TCP/DoT connection (bsc#1280406). - CVE-2026-81634: Possible heap buffer overflow during DNSSEC canonicalization (bsc#1280409). - CVE-2026-81642: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY (bsc#1280411). - CVE-2026-82717: CNAME synthesis could lead to heap corruption (bsc#1280412). - CVE-2026-82720: Use-after-free in DoH stream cleanup code path (bsc#1280413). - CVE-2026-85501: Retrap: Novel Vulnerabilities to launch Algorithmic Complexity Attacks on DNSSEC (bsc#1280414). Changes for unbound: - Update to 1.26.1: * Update icannbundle.pem certificates in unbound-anchor, valid for 2009-2029 and 2025-2045 * Add max-transfer-size and max-transfer-time options to limit auth-zone and rpz transfer size and time, default disabled * Overload local_data_remove in unbound-control to also remove specific records * Add local-zone types block_aaaa, block_a_wdata and block_aaaa_wdata; fix respip+dns64 to use original A records instead of ones already modified by respip * ipsecmod hook script now needs to start with '#!/bin/sh', it is executed with execv instead of system for security * Server now continues to start if a secondary zone fails to load from its zonefile, or if a primary zonefile is missing; $INCLUDE is no longer allowed in secondary zone zonefiles * Auth-zone and RPZ zones now drop out-of-zone content on load * Primary hostname for zone transfers can now use CNAME(s) * Fix windows 64bit build for libssp dependency * Update IANA portlist * Fix heap out-of-bounds write via size_t-to-int truncation in setup_if()/outside_network_create() for large nu
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- SUSE:Linux Micro 6.0 unbound0 → 1.26.1-159998.1.1
How to fix SUSE-SU-2026:24135-1
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
Exploitation likelihood is not on this record for SUSE-SU-2026:24135-1. A missing EPSS score is not a low risk. Compare Security update for unbound with the linked advisory before you change production.
Which versions are affected?
Compare what you have installed with 0 → 1.26.1-159998.1.1. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 9, 2026 · OpenSSF OSV / OSV Scanner
Detected
This update for unbound fixes the following issues: - CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' (bsc#1280403). - CVE-2026-77955: Possible ZONEMD verification bypass window (bsc#1280404). - CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission (bsc#1280405). - CVE-2026-80225: Possible degradation of service from continuous queries on the same TCP/
Oct 15, 2026 · OpenSSF OSV / OSV Scanner
Fix available
unbound fixed in 1.26.1-159998.1.1
Oct 15, 2026 · OpenSSF OSV / OSV Scanner
Fix available
unbound fixed in 1.26.1-159998.1.1
Oct 15, 2026 · OpenSSF OSV / OSV Scanner
Updated
This update for unbound fixes the following issues: - CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' (bsc#1280403). - CVE-2026-77955: Possible ZONEMD verification bypass window (bsc#1280404). - CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission (bsc#1280405). - CVE-2026-80225: Possible degradation of service from continuous queries on the same TCP/
Sources
- OpenSSF OSV / OSV ScannerPackage advisorySUSE-SU-2026:24135-1
Security update for unbound
osv.dev
References
Freshness
Last verified in this catalog Oct 15, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.