CVE-2026-78008 (GCVE-0-2026-78008)
Vulnerability from cvelistv5
Published
2026-08-27 23:24
Modified
2026-08-29 03:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| WatchGuard | Fireware OS |
Version: 2025.0 < 2026.2.2 Version: 12.0 < 12.12.2 |
|||||||
|
|||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-78008",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-28T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-29T03:56:05.373Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"Default"
],
"product": "Fireware OS",
"vendor": "WatchGuard",
"versions": [
{
"lessThan": "2026.2.2",
"status": "affected",
"version": "2025.0",
"versionType": "custom"
},
{
"lessThan": "12.12.2",
"status": "affected",
"version": "12.0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"platforms": [
"T15/T35"
],
"product": "Fireware OS",
"vendor": "WatchGuard",
"versions": [
{
"lessThan": "12.5.20",
"status": "affected",
"version": "12.0",
"versionType": "custom"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThis vulnerability is exposed through the Fireware OS management interfaces (WSM and the Management Web UI). To reduce risk, do not expose the Fireware OS management interfaces to the internet.\u003c/p\u003e"
}
],
"value": "This vulnerability is exposed through the Fireware OS management interfaces (WSM and the Management Web UI). To reduce risk, do not expose the Fireware OS management interfaces to the internet."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*",
"versionEndExcluding": "12.5.20",
"versionStartIncluding": "12.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2026.2.2",
"versionStartIncluding": "2025.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*",
"versionEndExcluding": "12.12.2",
"versionStartIncluding": "12.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Cody Sixteen"
}
],
"descriptions": [
{
"lang": "en",
"value": "A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic."
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "WatchGuard is not aware of any exploitation of this vulnerability in the wild."
}
],
"value": "WatchGuard is not aware of any exploitation of this vulnerability in the wild."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 8.6,
"baseSeverity": "HIGH",
"vectorString": "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",
"version": "4.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-27T23:24:32.515Z",
"orgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
"shortName": "WatchGuard"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://psirt.watchguard.com/CVE-2026-78008"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20"
}
],
"value": "Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20"
}
],
"title": "Fireware OS Authenticated Buffer Overflow in wgagent",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eAdministrators should not expose the Firebox\u0027s management interfaces to untrusted network locations. See our \u003ca href=\"https://techsearch.watchguard.com/KB?type=Article\u0026amp;SFDCID=kA10H000000XeAtSAK\u0026amp;lang=en_US\"\u003eFirebox Remote Management Best Practices\u003c/a\u003e KB article for guidance on how to secure remote management to a Firebox.\u003c/p\u003e"
}
],
"value": "Administrators should not expose the Firebox\u0027s management interfaces to untrusted network locations. See our Firebox Remote Management Best Practices (https://techsearch.watchguard.com/KB?type=Article\u0026SFDCID=kA10H000000XeAtSAK\u0026lang=en_US) KB article for guidance on how to secure remote management to a Firebox."
}
]
}
},
"cveMetadata": {
"assignerOrgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
"assignerShortName": "WatchGuard",
"cveId": "CVE-2026-78008",
"datePublished": "2026-08-27T23:24:32.515Z",
"dateReserved": "2026-08-21T21:46:38.156Z",
"dateUpdated": "2026-08-29T03:56:05.373Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-78008\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-28T17:36:34.192754Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-28T17:37:10.300Z\"}}], \"cna\": {\"title\": \"Fireware OS Authenticated Buffer Overflow in wgagent\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Cody Sixteen\"}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 8.6, \"baseSeverity\": \"HIGH\", \"vectorString\": \"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\"}}], \"affected\": [{\"vendor\": \"WatchGuard\", \"product\": \"Fireware OS\", \"versions\": [{\"status\": \"affected\", \"version\": \"2025.0\", \"lessThan\": \"2026.2.2\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"12.0\", \"lessThan\": \"12.12.2\", \"versionType\": \"custom\"}], \"platforms\": [\"Default\"], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"WatchGuard\", \"product\": \"Fireware OS\", \"versions\": [{\"status\": \"affected\", \"version\": \"12.0\", \"lessThan\": \"12.5.20\", \"versionType\": \"custom\"}], \"platforms\": [\"T15/T35\"], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"WatchGuard is not aware of any exploitation of this vulnerability in the wild.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"WatchGuard is not aware of any exploitation of this vulnerability in the wild.\", \"base64\": false}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20\", \"base64\": false}]}], \"references\": [{\"url\": \"https://psirt.watchguard.com/CVE-2026-78008\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Administrators should not expose the Firebox\u0027s management interfaces to untrusted network locations. See our Firebox Remote Management Best Practices (https://techsearch.watchguard.com/KB?type=Article\u0026SFDCID=kA10H000000XeAtSAK\u0026lang=en_US) KB article for guidance on how to secure remote management to a Firebox.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eAdministrators should not expose the Firebox\u0027s management interfaces to untrusted network locations. See our \u003ca href=\\\"https://techsearch.watchguard.com/KB?type=Article\u0026amp;SFDCID=kA10H000000XeAtSAK\u0026amp;lang=en_US\\\"\u003eFirebox Remote Management Best Practices\u003c/a\u003e KB article for guidance on how to secure remote management to a Firebox.\u003c/p\u003e\", \"base64\": false}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-787\", \"description\": \"CWE-787\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"This vulnerability is exposed through the Fireware OS management interfaces (WSM and the Management Web UI). To reduce risk, do not expose the Fireware OS management interfaces to the internet.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eThis vulnerability is exposed through the Fireware OS management interfaces (WSM and the Management Web UI). To reduce risk, do not expose the Fireware OS management interfaces to the internet.\u003c/p\u003e\", \"base64\": false}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"12.5.20\", \"versionStartIncluding\": \"12.0\"}, {\"criteria\": \"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2026.2.2\", \"versionStartIncluding\": \"2025.0\"}, {\"criteria\": \"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"12.12.2\", \"versionStartIncluding\": \"12.0\"}], \"operator\": \"OR\"}], \"operator\": \"OR\"}], \"providerMetadata\": {\"orgId\": \"5d1c2695-1a31-4499-88ae-e847036fd7e3\", \"shortName\": \"WatchGuard\", \"dateUpdated\": \"2026-08-27T23:24:32.515Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-78008\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-29T03:56:05.373Z\", \"dateReserved\": \"2026-08-21T21:46:38.156Z\", \"assignerOrgId\": \"5d1c2695-1a31-4499-88ae-e847036fd7e3\", \"datePublished\": \"2026-08-27T23:24:32.515Z\", \"assignerShortName\": \"WatchGuard\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…