Fireware OS Deserialization of Untrusted Data in samld Allows Remote Code Execution
A deserialization of untrusted data vulnerability in WatchGuard Fireware OS's SAML single sign-on session handling (samld) allows an attacker who has already obtained the ability to write files on the appliance to execute arbitrary code in the context of the samld service by causing samld to load a maliciously crafted session file.
CVE-2026-13046
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-13046
Fireware OS
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Fireware OS
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "WatchGuard",
"product": "Fireware OS",
"versions": [
{
"status": "affected",
"version": "2026.3",
"lessThan": "2026.3.2",
"versionType": "custom"
},
{
"status": "affected",
"version": "2025.0",
"lessThan": "2026.2.3",
"versionType": "custom"
},
{
"status": "affected",
"version": "12.0",
"lessThan": "12.12.3",
"versionType": "custom"
}
],
"platforms": [
"Default"
],
"defaultStatus": "unaffected"
},
{
"vendor": "WatchGuard",
"product": "Fireware OS",
"versions": [
{
"status": "affected",
"version": "12.11",
"lessThan": "12.11.10",
"versionType": "custom"
}
],
"platforms": [
"EUCC"
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-13046
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #4984 · Revision 1
- Added to Heist Feed
- Publisher date