CVE-2026-90442 Fireware OS - Buffer Overflow

Fireware OS contains a stack-based buffer overflow caused by improper handling in the certd process, letting authenticated attackers with management interface access crash the certificate service or execute arbitrary code remotely.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Remote Code Execution, Denial Of Service
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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
Published
27 October 2026
Updated
29 October 2026
Weakness
CWE-121

Vendor fix

Update to the latest Fireware OS version with the buffer overflow fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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