synced 10 MIN AGO
01 Record

CVE-2026-93864

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

HighPUBLISHEDCNA: WatchGuard
CNA base score7.1 CVSS v4.0CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H

02 Description

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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.13% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 2.7% of scored records. A rank, not a probability.
NVD base score
7.1 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS: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:X
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-29.
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
2026-10-29 03:56Z6 HR AGO
Reserved
2026-09-18
Assigning CNA
WatchGuard
Record state
PUBLISHED
Severity
High (CVSS 7.1)
CNA CVSS vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H
Weaknesses
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
  • CWE-59Improper Link Resolution Before File Access ('Link Following')Base
  • CWE-73External Control of File Name or PathBase
  • CWE-377Insecure Temporary FileClass
Data version
5.2
Document digest
a178db5b88a08e64197a3c65d9be0f9e1ec2e657cd4ba3cf1e48868d154ec5db

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