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Vulnerability record · CVE-2026-78010 · published 28 August 2026

CVE-2026-78010: Stack-based buffer overflow vulnerability

A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process iallows 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 0.54% · top 56.7% CWE-121 · Stack-based buffer overflowCWE-787 · Out-of-bounds write Deferred
8.7CVSS 4.0 base score
0.54%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
3 Sep 2026Last modified by NVD

Description

A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process iallows 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-2026-78010

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Source: NIST National Vulnerability Database (record CVE-2026-78010), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.