{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-7273", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "state": "PUBLISHED", "assignerShortName": "Zyxel", "dateReserved": "2026-04-28T06:21:36.574Z", "datePublished": "2026-06-16T02:20:29.847Z", "dateUpdated": "2026-09-22T03:55:39.207Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2026-06-16T02:20:29.847Z" }, "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-121", "description": "CWE-121 Stack-based buffer overflow", "type": "CWE" } ] } ], "affected": [ { "vendor": "Zyxel", "product": "GS1900-48HPv2 firmware", "versions": [ { "status": "affected", "version": "<= 2.90(ABTQ.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-8 firmware", "versions": [ { "status": "affected", "version": "<= 2.90(AAHH.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-8HP firmware", "versions": [ { "status": "affected", "version": "<= 2.90(AAHI.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-10HP firmware", "versions": [ { "status": "affected", "version": "<= 2.90(AAZI.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-16 firmware", "versions": [ { "status": "affected", "version": "<= 2.90(AAHJ.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-24 firmware", "versions": [ { "status": "affected", "version": "<= 2.90(AAHL.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-24E firmware", "versions": [ { "status": "affected", "version": "<= 2.90(AAHK.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-24EP firmware", "versions": [ { "status": "affected", "version": "<= 2.90(ABTO.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-24HPv2 firmware", "versions": [ { "status": "affected", "version": "<= 2.90(ABTP.1)C0" } ], "defaultStatus": "unaffected" }, { "vendor": "Zyxel", "product": "GS1900-48 firmware", "versions": [ { "status": "affected", "version": "<= 2.90(AAHN.1)C0" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request." } ] } ], "references": [ { "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-stack-based-buffer-overflow-vulnerability-in-gs1900-series-switches-06-16-2026", "tags": [ "vendor-advisory" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" } } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 1.0.2" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-17T00:00:00+00:00", "options": [ { "Exploitation": "active" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-7273" } } }, { "other": { "type": "kev", "content": { "dateAdded": "2026-09-21", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7273" } } } ], "references": [ { "url": "https://www.greynoise.io/blog/open-season-on-kapibala-attacker-steals-government-records-wordpress-exploitation", "tags": [ "third-party-advisory" ] }, { "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7273", "tags": [ "government-resource" ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-22T03:55:39.207Z" }, "timeline": [ { "time": "2026-09-21T00:00:00.000Z", "lang": "en", "value": "CVE-2026-7273 added to CISA KEV" } ] } ] } }