Vulnerability-Lookup

GHSA-MG78-5W4C-GP57

Vulnerability from github – Published: 2026-03-03 15:31 – Updated: 2026-03-04 18:31

Details

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface.

This vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.

Severity ?

8.6 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-3342"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-03T14:15:56Z",
    "severity": "HIGH"
  },
  "details": "An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface.\n\nThis vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.",
  "id": "GHSA-mg78-5w4c-gp57",
  "modified": "2026-03-04T18:31:49Z",
  "published": "2026-03-03T15:31:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3342"
    },
    {
      "type": "WEB",
      "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00003"
    },
    {
      "type": "WEB",
      "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0003"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-3342 (GCVE-0-2026-3342)

Vulnerability from cvelistv5 – Published: 2026-03-03 13:17 – Updated: 2026-03-04 15:22

Title

WatchGuard Firebox Out of Bounds Write Vulnerability

Summary

An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface. This vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.

Severity ?

8.6 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-787 - Out-of-bounds Write

Assigner

WatchGuard

References

URL

Tags

https://www.watchguard.com/wgrd-psirt/advisory/wg…

Impacted products

	Vendor	Product	Version
	WatchGuard	Fireware OS	Affected: 11.9 , ≤ 11.12.4+541730 (semver) Affected: 12.0 , ≤ 12.11.7 (semver) Affected: 12.5 , ≤ 12.5.16 (semver) Affected: 2025.1 , ≤ 2026.1.1 (semver)

Credits

btaol

Show details on NVD website

JSON

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                  },
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                "timestamp": "2026-03-03T00:00:00+00:00",
                "version": "2.0.3"
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                },
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      "credits": [
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              "lang": "en",
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        "advisory": "WGSA-2026-00003",
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          "FBX-31304"
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-MG78-5W4C-GP57

CVE-2026-3342 (GCVE-0-2026-3342)

Tags

Sightings

Nomenclature