CVE-2026-26035

Description

An Improper Authentication vulnerability [CWE-287] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11, FortiWeb 7.2.0 through 7.2.12, FortiWeb 7.0.0 through 7.0.12 may allow a remote unauthenticated attacker to login into the Fortiweb GUI/CLI with a random username and password

Overview

State: PUBLISHED
Assigner (CNA): fortinet
CVSS severity: HIGH
CVSS score: 8.8 / 10
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Effective score: 8.8 / 10 HIGH source: CNA overview
CWE(s): CWE-287
Reserved: 2026-02-10
Published: 2026-08-12 12:19 UTC
Last updated: 2026-08-13 03:55 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/26xxx/CVE-2026-26035.json
Linked Threat: CVE-2026-26035 — CVE-2026-26035

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: 2026-08-12 13:17:22 UTC
NVD last modified: 2026-08-13 05:17:23 UTC
NVD CVSS v3.1: 9.8 / 10 CRITICAL source: psirt@fortinet.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 3.9 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.0051 (probability of exploitation in next 30 days)
EPSS percentile: 41.06% vs all CVEs — higher = more likely to be exploited, as of 2026-08-14

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-2026-57193
Assigner: fortinet
Published: Aug 12, 2026, 12:19:03 PM
Updated: Aug 13, 2026, 3:55:28 AM
EUVD base score (CVSS 3.1): 8.8 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
EUVD-reported EPSS: 0.5100
Vendors: Fortinet
Products: FortiWeb (8.0.0 ≤8.0.2)

FortiWeb (7.4.0 ≤7.4.11)

FortiWeb (7.0.0 ≤7.0.12)

FortiWeb (7.2.0 ≤7.2.12)

FortiWeb (7.6.0 ≤7.6.6)
Aliases: GHSA-q9j3-5j7m-6w3x

ENISA description: An Improper Authentication vulnerability [CWE-287] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11, FortiWeb 7.2.0 through 7.2.12, FortiWeb 7.0.0 through 7.0.12 may allow a remote unauthenticated attacker to login into the Fortiweb GUI/CLI with a random username and password

EUVD references (1)

https://fortiguard.fortinet.com/psirt/FG-IR-26-158

Affected products (1)

Vendor	Product	Versions	Platforms
Fortinet	FortiWeb	`8.0.0` (affected), `7.6.0` (affected), `7.4.0` (affected), `7.2.0` (affected), `7.0.0` (affected)	—

Vendor references (1)

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

https://fortiguard.fortinet.com/psirt/FG-IR-26-158

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 (1)

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://fortiguard.fortinet.com/psirt/FG-IR-26-158 psirt@fortinet.com

Remediations (10)

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

Microsoft and Adobe Patch Tuesday, August 2026 Security Update Review

web:blog.qualys.com

The August 2026 Microsoft Patch Tuesday release delivers security fixes for vulnerabilities affecting a wide range of Microsoft products and services. As attackers continue to exploit unpatched…

2026-08-14 13:52 UTC
Microsoft Patch Tuesday for August 2026 — Snort rules and prominent ...

web:blog.talosintelligence.com

Microsoft has released its monthly security update for August 2026 , which includes 421 vulnerabilities affecting a range of products, including 62 that Microsoft marked as "critical."

2026-08-14 13:52 UTC
Pennsylvania Access To Criminal History - Home - pa

web:epatch.pa.gov

Why does PATCH exist? Its purpose is to better enable the public to obtain criminal history record checks. The repository was created and is maintained in accordance with Pennsylvania's Criminal History Information Act contained in Chapter 91 of Title 18, Crimes Code. This Act also directs the Pennsylvania State Police (PSP) to disseminate criminal history data to criminal justice agencies ...

2026-08-14 13:52 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Security Update Guide - Microsoft Security Response Center

2026-08-14 13:52 UTC
Patch - Everything Local: Breaking News, Events, Discussions

web:patch.com

The best breaking news, stories, and events from the Patch network of local news sites

2026-08-14 13:52 UTC
Patch Notes - VALORANT

web:playvalorant.com

VALORANT Patch Notes 13.02 Phoenix ult change, new maps added to Retakes, and loads of bug fixes.

2026-08-14 13:52 UTC
Microsoft Patch Tuesday, August 2026: Updates, CVEs, and Exploited Bugs ...

web:senserva.com

The August 2026 Microsoft Patch Tuesday release (August 11, 2026 ): 67 updates fixing 751 CVEs , 3 actively exploited (CISA KEV). Ranked by real-world risk, free.

2026-08-14 13:52 UTC
New Microsoft Defender 'ShieldBreak' zero-day grants SYSTEM privileges

web:www.bleepingcomputer.com

Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldBreak" after Microsoft released the August 2026 Patch Tuesday security updates.

2026-08-14 13:52 UTC
N-central Security Update - August 10, 2026 - N-able

web:www.n-able.com

Patch notifications, urgent emails, and open questions take a real toll on your team, your customers, and your confidence in the tools you rely on. In moments like this, everyone wants the same thing: real information, fast.

2026-08-14 13:52 UTC
patch.moe - Age Verification

web:www.patch.moe

Age Verification Are you 18 years or older? YES NO

2026-08-14 13:52 UTC

AI Forensic Analysis

Only Available for Registered Users. Sign in to view.

Raw JSON

The full cvelistV5 record. Download as CVE-2026-26035.json.

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-26035",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-12T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-13T03:55:28.475Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:fortinet:fortiweb:8.0.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:8.0.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:8.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.6.6:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.6.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.6.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.6.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.6.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.6.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.6.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.11:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.10:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.9:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.8:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.7:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.6:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.12:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.11:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.10:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.9:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.8:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.7:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.6:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.2.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.12:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.11:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.10:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.9:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.8:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.7:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.6:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.0.0:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "FortiWeb",
          "vendor": "Fortinet",
          "versions": [
            {
              "lessThanOrEqual": "8.0.2",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.6.6",
              "status": "affected",
              "version": "7.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.4.11",
              "status": "affected",
              "version": "7.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.12",
              "status": "affected",
              "version": "7.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.12",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An Improper Authentication vulnerability [CWE-287] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11, FortiWeb 7.2.0 through 7.2.12, FortiWeb 7.0.0 through 7.0.12 may allow a remote unauthenticated attacker to login into the Fortiweb GUI/CLI with a random username and password"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "Improper access control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-12T12:19:03.031Z",
        "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
        "shortName": "fortinet"
      },
      "references": [
        {
          "name": "https://fortiguard.fortinet.com/psirt/FG-IR-26-158",
          "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-158"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to FortiWeb version 8.0.3 or above\nUpgrade to FortiWeb version 7.6.7 or above\nUpgrade to FortiWeb version 7.4.12 or above\nUpgrade to upcoming  FortiWeb version 7.2.13 or above\nUpgrade to upcoming  FortiWeb version 7.0.13 or above"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
    "assignerShortName": "fortinet",
    "cveId": "CVE-2026-26035",
    "datePublished": "2026-08-12T12:19:03.031Z",
    "dateReserved": "2026-02-10T13:04:43.330Z",
    "dateUpdated": "2026-08-13T03:55:28.475Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}