CVE-2026-13046
Fireware OS Deserialization of Untrusted Data in samld Allows Remote Code Execution
HIGH 7.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.37 % · percentile 31 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- WatchGuard
- NVD status
- Analyzed
Description
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.
Weaknesses (CWE)
- CWE-502 — Deserialization of Untrusted Data
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | HIGH 7.5 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | WatchGuard |
| CVSS 4.0 | HIGH 7.5 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/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:X/V:X/RE:X/U:X | NVD · 5d1c2695-1a31-4499-88ae-e847036fd7e3 (Secondary) |
| CVSS 3.1 | HIGH 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-89498
- GCVE · GCVE-0-2026-13046
Affected configurations (NVD CPE)
cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*≥ 12.0 < 12.11.10cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*≥ 12.12 < 12.12.3cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*≥ 2025.0 < 2026.2.3cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*≥ 2026.3 < 2026.3.2
Affected products
| Product | Versions |
|---|---|
| WatchGuard · Fireware OS | affected 2026.3 < 2026.3.2 ; affected 2025.0 < 2026.2.3 ; affected 12.0 < 12.12.3 |
| WatchGuard · Fireware OS | affected 12.11 < 12.11.10 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |