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Vulnerability record · CVE-2026-19316 · published 28 August 2026

CVE-2026-19316: Double free vulnerability

A double-free vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.

8.7 CVSS 4.0 High EPSS 0.32% · top 77.3% CWE-415 · Double freeCWE-416 · Use after free Deferred
8.7CVSS 4.0 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
3 Sep 2026Last modified by NVD

Description

A double-free vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://psirt.watchguard.com/CVE-2026-19316

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-33824Double free in Windows IKE Extension enables remote code executionA double free flaw (CWE-415) exists in the Windows IKE Extension, reachable over the network by an unauthenticated attacker. Successful exploitation …KEVEPSS 1.6%analysed7.0CVE-2025-62215Windows Kernel race condition and double free privilege escalationA race condition combined with a double free in the Windows Kernel lets a locally authenticated attacker corrupt kernel memory and elevate privileges…KEVEPSS 6.0%analysed8.8CVE-2014-0502Adobe Flash Player Double Free Enables Remote Code ExecutionAdobe Flash Player, Adobe AIR, and the AIR SDK contain a double free vulnerability (CWE-415) that allows remote attackers to execute arbitrary code. …KEVEPSS 25%analysed8.8CVE-2018-4990Adobe Acrobat and Reader double free allows code executionAdobe Acrobat and Reader contain a double free (CWE-415) in versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and e…KEVEPSS 36%analysed7.0CVE-2021-22600Linux kernel af_packet double free allows local privilege escalationA double free bug in packet_set_ring() in net/packet/af_packet.c lets a local user trigger memory corruption through crafted syscalls. It matters bec…KEVEPSS 6.5%analysed7.8CVE-2020-9859Apple iOS, iPadOS, macOS, tvOS and watchOS double free allows kernel code executionA memory consumption issue in Apple's operating systems was caused by a double free (CWE-415) and fixed through improved memory handling. An applicat…KEVEPSS 0.83%analysed

Source: NIST National Vulnerability Database (record CVE-2026-19316), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.