CVE-2026-81851
published 2026-08-28CVE-2026-81851: A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a…
PriorityP336medium6.9CVSS 4.0
AVNACLATNPRHUINVCNVINVAHSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.25%
16.1th percentile
A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially crafted configuration.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| watchguard | fireware_os | >= 12.0 < 12.12.1 | 12.12.1 |
| watchguard | fireware_os | >= 12.0 < 12.11.9 | 12.11.9 |
| watchguard | fireware_os | >= 12.0 < 12.5.18 | 12.5.18 |
| watchguard | fireware_os | >= 2025.0 < 2026.2.1 | 2026.2.1 |
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GHSA
A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially c
ghsa_unreviewed·2026-08-28
CVE-2026-81851 [MEDIUM] CWE-122 A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially c
A heap-based buffer overflow vulnerability in Fireware OS's iked process allows an authenticated administrator to crash the IKE daemon (iked), resulting in a denial of service, by saving a specially crafted configuration.
VulDB
WatchGuard Fireware OS iked buffer overflow
vuldb·2026-08-28·CVSS 6.9
CVE-2026-81851 [MEDIUM] WatchGuard Fireware OS iked buffer overflow
A vulnerability labeled as problematic has been found in WatchGuard Fireware OS. This affects an unknown function of the component iked. Executing a manipulation can lead to buffer overflow.
This vulnerability appears as CVE-2026-81851. The attack may be performed from remote. There is no available exploit.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-28
Published