CVE-2026-103593 Fireware OS - Remote Code Execution & Privilege Escalation

Fireware OS contains a stack-based buffer overflow caused by improper handling of certificates in the logging service, letting network-adjacent attackers who can impersonate or intercept log server traffic execute arbitrary code with root privileges, exploit requires attacker to intercept or impersonate log server traffic.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.10% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, Privilege Escalation
CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/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 vulnerability fixed.

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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