CVE-2026-120283

Description

A vulnerability was identified in Linksys E8450 1.2.00.360516. Affected is the function strcpy of the file /www/cgi-bin/portal.cgi. Such manipulation of the argument hidden_timezone leads to stack-based buffer overflow. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Overview

State: PUBLISHED
Assigner (CNA): VulDB
CVSS severity: CRITICAL
CVSS score: 10.0 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Effective score: 10.0 / 10 CRITICAL source: CNA overview
CWE(s): CWE-121, CWE-119
Reserved: 2026-11-01
Published: 2026-11-02 01:00 UTC
Last updated: 2026-11-02 01:00 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/120xxx/CVE-2026-120283.json
Linked Threat: CVE-2026-120283 — Linksys E8450 portal.cgi strcpy stack-based overflow

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-11-02 01:17:27 UTC
NVD last modified: 2026-11-02 01:17:27 UTC
NVD CVSS v3.1: 10.0 / 10 CRITICAL source: cna@vuldb.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploitability subscore: 3.9 / 10
Impact subscore: 6.0 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-114916
Assigner: VulDB
Published: Nov 2, 2026, 1:00:22 AM
Updated: Nov 2, 2026, 1:00:22 AM
EUVD base score (CVSS 4.0): 10.0 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
EUVD-reported EPSS: 0.0000
Vendors: Linksys
Products: E8450 (1.2.00.360516)
Aliases: GHSA-q5j7-qf5p-p6hv

ENISA description: A vulnerability was identified in Linksys E8450 1.2.00.360516. Affected is the function strcpy of the file /www/cgi-bin/portal.cgi. Such manipulation of the argument hidden_timezone leads to stack-based buffer overflow. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.

EUVD references (5)

Affected products (1)

Vendor	Product	Versions	Platforms
Linksys	E8450	`1.2.00.360516` (affected)	—

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

VDB-429627 | Linksys E8450 portal.cgi strcpy stack-based overflow vdb-entrytechnical-description
VDB-429627 | CTI Indicators (IOB, IOC, IOA) signaturepermissions-required
CVE-2026-120283 | CVE Analysis and Report third-party-advisory
Submit #1014924 | Linksys E8450 firmware 1.2.00.360516 Linksys E8450 portal.cgi hidden_timezone stack buffer overflow third-party-advisory
https://www.linksys.com/ product

MITRE references (5) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

CVE-2026-120283 | CVE Analysis and Report third-party-advisory
Submit #1014924 | Linksys E8450 firmware 1.2.00.360516 Linksys E8450 portal.cgi hidden_timezone stack buffer overflow third-party-advisory
VDB-429627 | Linksys E8450 portal.cgi strcpy stack-based overflow vdb-entry, technical-description
VDB-429627 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
https://www.linksys.com/ product

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (5)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://vuldb.com/cve/CVE-2026-120283 cna@vuldb.com
https://vuldb.com/submit/1014924 cna@vuldb.com
https://vuldb.com/vuln/429627 cna@vuldb.com
https://vuldb.com/vuln/429627/cti cna@vuldb.com
https://www.linksys.com/ cna@vuldb.com

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

August 2026 Critical Security Patch Update Released - Oracle Blogs

web:blogs.oracle.com

For more information about the Critical Security Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.

2026-11-02 11:31 UTC
Update: Monthly Critical Security Patch Updates (CSPUs) Begin May 28 ...

web:blogs.oracle.com

As a follow-up to our recent post, Accelerating Vulnerability Detection and Response, Oracle is announcing the start date and cadence for monthly Critical Security Patch Updates (CSPUs). Beginning May 28, 2026 , Oracle will deliver a Critical Security Patch Update (CSPU) each month.

2026-11-02 11:31 UTC
Veracode Fix | Veracode Docs

web:docs.veracode.com

Veracode Fix is an AI-assisted remediation solution that generates secure code patches for security findings across multiple finding types, including SAST and SCA. Developers can review the suggested patches and apply them to their application source without writing code.

2026-11-02 11:31 UTC
July 2026 Critical Patch Update Fixes 1,400+ Oracle Flaws

web:thecyberexpress.com

Oracle's July 2026 Critical Patch Update fixes 1,449 security flaws across 334 products, including 600 remotely exploitable vulnerabilities.

2026-11-02 11:31 UTC
Rapid CVE Mitigation | Cato Networks

web:www.catonetworks.com

Discover Cato Networks' Rapid CVE Mitigation , offering automated virtual patching for critical vulnerabilities, without customer involvement.

2026-11-02 11:31 UTC
Known Exploited Vulnerabilities Catalog - CISA

web:www.cisa.gov

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild. Organizations should use the KEV catalog as an input to their vulnerability management prioritization framework. Learn more about ...

2026-11-02 11:31 UTC
Patch Smarter, Not Harder - CISA

web:www.cisa.gov

The median time for full resolution rose to 43 days. Defenders need greater clarity and speed to patch systems in today's threat landscape. We must flip the script on patching prioritization: patch smarter, not harder.

2026-11-02 11:31 UTC
CVE: Common Vulnerabilities and Exposures

web:www.cve.org

At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures

2026-11-02 11:31 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-11-02 11:31 UTC
Oracle Critical Security Patch Update Advisory - September 2026

web:www.oracle.com

Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.

2026-11-02 11:31 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-120283.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:linksys:e8450_firmware:*:*:*:*:*:*:*:*"
          ],
          "product": "E8450",
          "vendor": "Linksys",
          "versions": [
            {
              "status": "affected",
              "version": "1.2.00.360516"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "fanchai (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was identified in Linksys E8450 1.2.00.360516. Affected is the function strcpy of the file /www/cgi-bin/portal.cgi. Such manipulation of the argument hidden_timezone leads to stack-based buffer overflow. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 10,
            "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-02T01:00:22.303Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-429627 | Linksys E8450 portal.cgi strcpy stack-based overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/429627"
        },
        {
          "name": "VDB-429627 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/429627/cti"
        },
        {
          "name": "CVE-2026-120283 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-120283"
        },
        {
          "name": "Submit #1014924 | Linksys E8450 firmware 1.2.00.360516 Linksys E8450 portal.cgi hidden_timezone stack buffer overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/1014924"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.linksys.com/"
        }
      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-11-01T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-11-01T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-11-01T09:03:17.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Linksys E8450 portal.cgi strcpy stack-based overflow",
      "x_generator": [
        "VulDB PVTS v202611"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-120283",
    "datePublished": "2026-11-02T01:00:22.303Z",
    "dateReserved": "2026-11-01T07:58:12.074Z",
    "dateUpdated": "2026-11-02T01:00:22.303Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}