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CVE-2025-53379

📛 CVE Title

CVE-2025-53379

⬇ Download JSON ⚠ View as Threat

Description

A out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all versions may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.

Overview

State
PUBLISHED
Assigner (CNA)
fortinet
CVSS severity
HIGH
CVSS score
CVSS 7.0 / 10 7.0 7.0 / 10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
Effective score
7.0 / 10 HIGH source: CNA overview
CWE(s)
CWE-125
Reserved
2025-06-27
Published
2026-07-14 15:13 UTC
Last updated
2026-07-22 13:57 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/53xxx/CVE-2025-53379.json
Linked Threat
CVE-2025-53379 — CVE-2025-53379

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
2026-07-14 16:16:42 UTC
NVD last modified
2026-07-15 18:30:56 UTC
NVD CVSS v3.1
CVSS 7.5 / 10 7.5 7.5 / 10 HIGH source: psirt@fortinet.com
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability subscore
3.9 / 10
Impact subscore
3.6 / 10
EPSS score
0.0039 (probability of exploitation in next 30 days)
EPSS percentile
31.25% vs all CVEs — higher = more likely to be exploited, as of 2026-07-31

NVD / KEV / EPSS data refreshed 2026-07-31 22:35 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

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-2025-210464
Assigner
fortinet
Published
Jul 14, 2026, 3:13:02 PM
Updated
Jul 22, 2026, 1:57:33 PM
EUVD base score (CVSS 3.1)
7.0 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
EUVD-reported EPSS
0.3900
Vendors
Fortinet
Products
FortiAuthenticator (6.3.0 ≤6.3.5)
FortiAuthenticator (6.5.0 ≤6.5.7)
FortiAuthenticator (6.4.0 ≤6.4.11)
FortiAuthenticator (6.6.0 ≤6.6.2)
Aliases
GHSA-xhc3-w35m-fp4q

ENISA description: A out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all versions may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.

EUVD references (1)

Affected products (1)
VendorProductVersionsPlatforms
Fortinet FortiAuthenticator 6.6.0 (affected), 6.5.0 (affected), 6.4.0 (affected), 6.3.0 (affected) —

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

  • cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*

Vendor references (1)

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

MITRE references (1) cveawg.mitre.org

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

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.

Remediations (10)

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

  • Microsoft Update Catalog
    web:catalog.update.microsoft.com

    Welcome to the Microsoft Update Catalog site. We want your feedback! Visit our newsgroup or send us an email to provide us with your thoughts and suggestions. To get started using the site, enter in your search terms in the Search box above or visit our FAQ for search tips. |Newsgroup|Send us your feedback

    2026-08-01 12:17 UTC
  • Microsoft August 2025 Patch Tuesday - SANS ISC
    web:isc.sans.edu

    Users should prioritize patching these vulnerabilities to prevent unauthorized code execution. Additionally, the Windows Kerberos Elevation of Privilege Vulnerability ( CVE - 2025 -53779), a disclosed zero-day, requires high privileges to exploit but could lead to domain administrator access, necessitating careful monitoring and mitigation .

    2026-08-01 12:17 UTC
  • Security Advisories and Bulletins | Microsoft Learn
    web:learn.microsoft.com

    Learning path Learn how Microsoft supports secure software development as part of a cybersecurity solution - Training Secure software development means integrating security into each phase of your development lifecycle, from requirements analysis to maintenance. Microsoft provides many services that can help you develop more secure code and deploy a more secure application in the cloud. This ...

    2026-08-01 12:17 UTC
  • Windows 11, version 25H2 known issues and notifications
    web:learn.microsoft.com

    Windows 11, version 25H2 is now available for all eligible devices. Devices running Home and Pro editions of Windows 11 that are not managed by IT departments will receive the update to Windows 11, version 25H2 through the machine learning-based intelligent rollout.

    2026-08-01 12:17 UTC
  • Security Update Guide - Microsoft
    web:msrc.microsoft.com

    The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

    2026-08-01 12:17 UTC
  • Nvd - Cve-2025-53379
    web:nvd.nist.gov

    CVE-2025-53379 Detail Description A out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all versions may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.

    2026-08-01 12:17 UTC
  • Security Update Guide - Microsoft
    web:portal.msrc.microsoft.com

    The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

    2026-08-01 12:17 UTC
  • Microsoft August 2025 Patch Tuesday fixes one zero-day, 107 flaws
    web:www.bleepingcomputer.com

    Today is Microsoft's August 2025 Patch Tuesday, which includes security updates for 107 flaws, including one publicly disclosed zero-day vulnerability in Windows Kerberos.

    2026-08-01 12:17 UTC
  • New Clickfix variant 'CrashFix' deploying Python Remote Access Trojan
    web:www.microsoft.com

    CrashFix crashes browsers to coerce users into executing commands that deploy a Python RAT, abusing finger.exe and portable Python to evade detection and persist on high‑value systems.

    2026-08-01 12:17 UTC
  • CVE-2025-53379 - High Vulnerability - TheHackerWire
    web:www.thehackerwire.com

    How do I fix or mitigate CVE-2025-53379 ? To protect against CVE-2025-53379 , you should: (1) Apply the latest security patches from Fortinet, (2) Check official security advisories for specific remediation steps, (3) Update affected software to the latest version, and (4) Monitor your systems for any signs of exploitation.

    2026-08-01 12:17 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2025-53379.json.

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "content": {
                "id": "CVE-2025-53379",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-14T15:55:57.538368Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        "providerMetadata": {
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
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            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.10:*:*:*:*:*:*:*",
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            "cpe:2.3:a:fortinet:fortiauthenticator:6.3.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.3.3:*:*:*:*:*:*:*",
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          ],
          "defaultStatus": "unaffected",
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          "vendor": "Fortinet",
          "versions": [
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              "status": "affected",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.5.7",
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              "version": "6.5.0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.4.11",
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            },
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C",
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              "description": "Information disclosure",
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      "providerMetadata": {
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      "references": [
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          "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-146"
        }
      ],
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          "value": "Upgrade to FortiAuthenticator version 6.6.3 or above"
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    "dateReserved": "2025-06-27T15:44:12.816Z",
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    "state": "PUBLISHED"
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