CVE-2018-13382 (GCVE-0-2018-13382)

Vulnerability from cvelistv5 – Published: 2019-06-04 20:33 – Updated: 2025-10-21 23:45
VLAI CISA Previdian
Summary
An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web portal allows an unauthenticated attacker to modify the password of an SSL VPN web portal user via specially crafted HTTP requests
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-23 13:31 UTC
CWE
  • Improper Access Control
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
Fortinet Fortinet FortiOS, FortiProxy Affected: FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8, 5.4.1 to 5.4.10, FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7
Create a notification for this product.
Date Public
2019-05-24 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: db03b1e6-6516-4763-9838-448a334c0fd2

Vulnerability ID: CVE-2018-13382

Status: Confirmed

Status Updated: 2022-01-10 01:00 CET

Exploited: Yes

Timestamps
First Seen: 2022-01-10
Asserted: 2022-01-10
Scope
Notes: Fortinet FortiOS and FortiProxy Improper Authorization | Affected: Fortinet / FortiOS and FortiProxy | Description: An Improper Authorization vulnerability in Fortinet FortiOS and FortiProxy under SSL VPN web portal allows an unauthenticated attacker to modify the password. | Required action: Apply updates per vendor instructions. | Due date: 2022-07-10 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2018-13382
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-285
Feed CISA Known Exploited Vulnerabilities Catalog
Product FortiOS and FortiProxy
Due Date 2022-07-10
Date Added 2022-01-10
Vendorproject Fortinet
Vulnerabilityname Fortinet FortiOS and FortiProxy Improper Authorization
Knownransomwarecampaignuse Known
References
Created: 2026-10-02 08:10 CEST | Updated: 2026-10-02 08:10 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f40c39dd-16c0-4608-ae33-ea39baf1f3dc

Vulnerability ID: CVE-2018-13382

Status: Confirmed

Status Updated: 2022-01-10 01:00 CET

Exploited: Yes

Timestamps
First Seen: 2022-01-10
Asserted: 2022-01-10
Scope
Notes: An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0 to... | Affected: Fortinet / Fortinet FortiOS, FortiProxy | CVSS: 9.1 (CRITICAL) | EPSS: 0.81691 | Used in malware: yes | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Confirmed Compromise

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0 to...
Cve Id CVE-2018-13382
Vendor Fortinet
Ghsa Id None
Product Fortinet FortiOS, FortiProxy
Added Date 2022-01-10T00:00:00.000Z
Cvss Score 9.1
Epss Score 0.81691
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99635
Used In Malware yes
Vulnerability Id CVE-2018-13382
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
To clipboard 

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                "time": "2022-01-10T00:00:00.000Z",
                "value": "CVE-2018-13382 added to CISA KEV"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "Fortinet FortiOS, FortiProxy",
              "vendor": "Fortinet",
              "versions": [
                {
                  "status": "affected",
                  "version": "FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8, 5.4.1 to 5.4.10, FortiProxy 2.0.0, 1.2.0 to 1.2.8,  1.1.0 to 1.1.6, 1.0.0 to 1.0.7"
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          "datePublic": "2019-05-24T00:00:00.000Z",
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            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
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                "userInteraction": "NONE",
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          "problemTypes": [
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                  "lang": "en",
                  "type": "text"
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          "providerMetadata": {
            "dateUpdated": "2021-06-03T10:28:48.000Z",
            "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
            "shortName": "fortinet"
          },
          "references": [
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              "tags": [
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              "url": "https://fortiguard.com/advisory/FG-IR-18-389"
            },
            {
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://www.fortiguard.com/psirt/FG-IR-20-231"
            }
          ],
          "x_legacyV4Record": {
            "CVE_data_meta": {
              "ASSIGNER": "psirt@fortinet.com",
              "ID": "CVE-2018-13382",
              "STATE": "PUBLIC"
            },
            "affects": {
              "vendor": {
                "vendor_data": [
                  {
                    "product": {
                      "product_data": [
                        {
                          "product_name": "Fortinet FortiOS, FortiProxy",
                          "version": {
                            "version_data": [
                              {
                                "version_value": "FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8, 5.4.1 to 5.4.10, FortiProxy 2.0.0, 1.2.0 to 1.2.8,  1.1.0 to 1.1.6, 1.0.0 to 1.0.7"
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            "problemtype": {
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                  "refsource": "CONFIRM",
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                },
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        "assignerShortName": "fortinet",
        "cveId": "CVE-2018-13382",
        "datePublished": "2019-06-04T20:33:53.000Z",
        "dateReserved": "2018-07-06T00:00:00.000Z",
        "dateUpdated": "2025-10-21T23:45:35.394Z",
        "state": "PUBLISHED"
      },
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.