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01 Record

CVE-2026-90464

Fireware OS Missing Command Validation allows Authenticated Arbitrary File Modification as Root

HighPUBLISHEDCNA: WatchGuard
CNA base score7.2 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

02 Description

Fireware OS Missing Command Validation allows Authenticated Arbitrary File Modification as Root

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.36% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 30.1% of scored records. A rank, not a probability.
NVD base score
7.2 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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 analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-28.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-27 15:52Z1 DAY AGO
Last updated
2026-10-27 15:52Z1 DAY AGO
Reserved
2026-09-11
Assigning CNA
WatchGuard
Record state
PUBLISHED
Severity
High (CVSS 7.2)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-59Improper Link Resolution Before File Access ('Link Following')Base
  • CWE-73External Control of File Name or PathBase
  • CWE-732Incorrect Permission Assignment for Critical ResourceClass
Data version
5.2
Document digest
9579ce009f4017b9032129afcb4db44b5f159206331a2d06f968884573c37b33

05 Affected products

VendorProductVersionsPlatforms
WatchGuardFireware OS2025.1 to < 2026.4, 12.0 to < 12.12.4, 12.0 to < 12.5.22Default, T15/T35

06 References

07 Remediation

Fireware OS 2026.4, Fireware OS 12.12.4, Fireware OS 12.5.22