CVE-2026-93864

Fireware OS Link Following in firewalld Allows Local Arbitrary File Overwrite as Root

At a glance

Severity
HIGH 7.1
State
PUBLISHED
Published
Updated
Assigner
WatchGuard
NVD status
Received

Description

A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and triggering a list update. Written content is partially constrained.

Scores

VersionScoreVectorScored by
CVSS 4.0HIGH 7.1CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:HWatchGuard
CVSS 4.0HIGH 7.1CVSS:4.0/AV:L/AC:L/AT:P/PR:L/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:XNVD · 5d1c2695-1a31-4499-88ae-e847036fd7e3 (Secondary)

Weaknesses (CWE)

European references

Affected products

ProductVersions
WatchGuard · Fireware OSaffected 2025.1 < 2026.4 ; affected 12.0 < 12.12.4
WatchGuard · Fireware OSaffected 12.0 < 12.5.22

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD