Fireware OS Authenticated Stack Buffer Overflow in certd Allows Denial of Service (WatchGuard Fireware OS)

CVE-2026-90442
HIGH 8.6

At a glance

Source
NVD
EPSS
EPSS 0.21 % · percentile 11 ()
State
PUBLISHED
Published
Updated
Assigner
WatchGuard
NVD status
Awaiting Analysis

Description

A stack-based buffer overflow vulnerability in the Fireware OS certd process allows an authenticated attacker with access to the Firebox management interface to crash the certificate management service and potentially execute arbitrary code by sending a specially crafted request.

Weaknesses (CWE)

  • CWE-121 — Stack-based Buffer Overflow
  • CWE-787 — Out-of-bounds Write

References

Scores

VersionScoreVectorScored by
CVSS 4.0HIGH 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:LWatchGuard
CVSS 4.0HIGH 8.6CVSS: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:XNVD · 5d1c2695-1a31-4499-88ae-e847036fd7e3 (Secondary)

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

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
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