Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of Service
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
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| WatchGuard | Fireware OS | unaffected |
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| WatchGuard | Fireware OS | unaffected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Watchguard | Fireware Os |
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| Watchguard | Fireware Os |
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Vendor Solution
Fireware OS 2026.4, Fireware OS 12.12.4, Fireware OS 12.5.22
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.165% probability within 30 days)
| Link | Providers |
|---|---|
| https://psirt.watchguard.com/CVE-2026-93862 |
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | An out-of-bounds read vulnerability in the FireCluster Sync processing allows an attacker positioned on the cluster interconnect, such as a compromised cluster peer or an on-path network attacker, to repeatedly crash the firewall's cluster synchronization process by sending specially crafted network traffic, resulting in a sustained denial of service. | |
| Title | Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of Service | |
| First Time appeared |
Watchguard
Watchguard fireware Os |
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| Weaknesses | CWE-125 CWE-129 CWE-787 CWE-823 |
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| CPEs | cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Watchguard
Watchguard fireware Os |
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| References |
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| Metrics |
cvssV4_0
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