synced 4 MIN AGO
01 Record

CVE-2026-93862

Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of Service

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

02 Description

Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of Service

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 ImpactpartialSuccessful exploitation gives limited 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
0.16% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 5.6% 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:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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 2026-10-29.
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 01:52Z7 HR AGO
Reserved
2026-09-18
Assigning CNA
WatchGuard
Record state
PUBLISHED
Severity
High (CVSS 7.2)
CNA CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-125Out-of-bounds ReadBase
  • CWE-129Improper Validation of Array IndexVariant
  • CWE-787Out-of-bounds WriteBase
  • CWE-823Use of Out-of-range Pointer OffsetBase
Data version
5.2
Document digest
8c26a2f6317cc709053918454943cbc99c7c954f42822f19fdc85016e08d80cd

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