CVE-2026-98432: WatchGuard Linux Kernel IPv4 Use-After-Free Vulnerability (CVE-2026-98432)
This WatchGuard advisory covers CVE-2026-98432 in Dimension, Fireware OS and WatchGuard AP.
Key facts
- Vendor rating
- Critical
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Dimension >= 2.0; Fireware OS 2025.1, >= 12.0; WatchGuard AP >= 1.0
- Advisory id
- WGSA-2026-0033
- Source published
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
Linux Kernel IPv4 Use-After-Free Vulnerability (CVE-2026-98432). Affected: Dimension >= 2.0; Fireware OS 2025.1, >= 12.0; WatchGuard AP >= 1.0.
Text from the source record.
- Dimension >= 2.0
- Fireware OS 2025.1, >= 12.0
- WatchGuard AP >= 1.0
Official advisory · high-confidence parse· fetched ·verify at source
End-of-life dates for WatchGuard Firebox / Fireware
CVE-2026-98432 in other vendors' advisories
- Fortinet: FG-IR-26-188, critical severity
- MikroTik: CVE-2026-98432
- NetApp: NTAP-20261102-0001, critical severity, fixed in E-Series SANtricity OS Controller Software: 11.90R7, E-Series SANtricity OS Controller Software: 12.10R1
- Proxmox: PSA-2026-00080
- Red Hat: CVE-2026-98432, critical severity, fixed in kernel-0:6.12.0-265.31.el10nv, kernel-0:6.12.0-211.72.1.el10_2, kernel-0:5.14.0-687.64.1.el9_8 and 11 more
- Sophos: sophos-sa-20261102-linux-kernel-tcp, high severity
- Veeam: KB4966, critical severity, fixed in Veeam UpdaterVeeam Infrastructure Appliance 13.1, Veeam Infrastructure Appliance 13.1, Veeam Agent for Linux 13.1
More WatchGuard advisories
CVE-2026-90465Oct 27, 2026Fireware OS Missing Authentication in FireCluster Sync Allows Privilege EscalationCVE-2026-93862Oct 27, 2026Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of ServiceCVE-2026-112709Oct 27, 2026Fireware OS Heap Buffer Overflow in AD Authentication ServiceCVE-2026-90464Oct 27, 2026external control of file path vulnerability in a WatchGuard Fireware OS firewallCVE-2026-103593Oct 27, 2026Fireware OS Stack Buffer Overflow in Logging Service Allows Remote Code ExecutionCVE-2026-113881Oct 27, 2026Fireware OS Stack Buffer Overflow in VPN Network Access Enforcement
WatchGuard advisories, November 2026All WatchGuard advisories
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