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CVE WatchAug 28, 2026

CVE-2026-78011

An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

0

0-100

Published: Aug 28, 2026 · Last modified: Aug 28, 2026 · CWE-191 · CWE-787

EPSS · 30d

Not enough EPSS history yet.

Technical description

An integer underflow 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.

Official references
Related CVEs
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-78010—
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——0A 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.16hCVE-2026-78008—
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——0A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.16hCVE-2026-19318—
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——0A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.16hCVE-2026-19317—
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——0An out-of-bounds read 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.16hCVE-2026-19314—
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——0An integer underflow 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.16hCVE-2026-13086—
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——0A stack-based buffer overflow in the epm (Endpoint Protection Manager) service used by the deprecated Mobile Security feature in WatchGuard Fireware OS allows an unauthenticated remote attacker to execute arbitrary code.16h