Detections
Analytics
RockyLinux 10 : unbound (RLSA-2026:23231)
critical Nessus Plugin ID 319604
Synopsis
The remote RockyLinux host is missing one or more security updates.Description
The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:23231 advisory.* unbound: Heap overflow and crash with multiple nsid, cookie, padding EDNS options (CVE-2026-42944)
* unbound: Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in Chase-Reply Messages (CVE-2026-42959)
* unbound: Unbound DNSSEC Validator Use-After-Free via Deep Copy Pointer Overwrite Leading to DoS and Possible Remote Code Execution (CVE-2026-33278)
Tenable has extracted the preceding description block directly from the RockyLinux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
https://errata.rockylinux.org/RLSA-2026:23231
https://bugzilla.redhat.com/show_bug.cgi?id=2479808
Plugin Details
Severity: Critical
ID: 319604
File Name: rocky_linux_RLSA-2026-23231.nasl
Version: 1.1
Type: Local
Published: 6/6/2026
Updated: 6/6/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-33278
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 10
Threat Score: 9.1
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Vulnerability Information
CPE: p-cpe:/a:rocky:linux:unbound, p-cpe:/a:rocky:linux:python3-unbound, p-cpe:/a:rocky:linux:python3-unbound-debuginfo, p-cpe:/a:rocky:linux:unbound-libs-debuginfo, p-cpe:/a:rocky:linux:unbound-utils, cpe:/o:rocky:linux:10, p-cpe:/a:rocky:linux:unbound-utils-debuginfo, p-cpe:/a:rocky:linux:unbound-anchor, p-cpe:/a:rocky:linux:unbound-devel, p-cpe:/a:rocky:linux:unbound-libs, p-cpe:/a:rocky:linux:unbound-debuginfo, p-cpe:/a:rocky:linux:unbound-dracut, p-cpe:/a:rocky:linux:unbound-debugsource, p-cpe:/a:rocky:linux:unbound-anchor-debuginfo
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 6/6/2026
Vulnerability Publication Date: 5/20/2026