9.8
CRITICAL
CVE-2021-26102
FortiWAN Remote File Deletion Vulnerability
Description

A relative path traversal vulnerability (CWE-23) in FortiWAN version 4.5.7 and below, 4.4 all versions may allow a remote non-authenticated attacker to delete files on the system by sending a crafted POST request. In particular, deleting specific configuration files will reset the Admin password to its default value.

INFO

Published Date :

Dec. 19, 2024, 2:15 p.m.

Last Modified :

Jan. 21, 2025, 8:29 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-26102 has a 5 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-26102 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fortinet fortiwan
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-26102.

URL Resource
https://fortiguard.fortinet.com/psirt/FG-IR-21-048 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 1 month, 1 week ago
9 stars 3 fork 3 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 930 different CVEs too.

None

Updated: 10 months, 1 week ago
1 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 932 different CVEs too.

None

Updated: 1 year, 9 months ago
0 stars 2 fork 2 watcher
Born at : April 8, 2023, 6:19 a.m. This repo has been linked 925 different CVEs too.

None

Updated: 11 months ago
2 stars 2 fork 2 watcher
Born at : Nov. 25, 2022, 5:43 p.m. This repo has been linked 932 different CVEs too.

PoC of FortiWAN auth bypass (https://www.fortiguard.com/psirt/FG-IR-21-048)

Python

Updated: 1 year, 10 months ago
8 stars 0 fork 0 watcher
Born at : Dec. 9, 2021, 12:55 p.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-26102 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-26102 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Jan. 21, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
    Added CWE NIST CWE-22
    Added CPE Configuration OR *cpe:2.3:a:fortinet:fortiwan:*:*:*:*:*:*:*:* versions from (including) 4.4.0 up to (excluding) 4.5.8
    Changed Reference Type https://fortiguard.fortinet.com/psirt/FG-IR-21-048 No Types Assigned https://fortiguard.fortinet.com/psirt/FG-IR-21-048 Vendor Advisory
  • New CVE Received by [email protected]

    Dec. 19, 2024

    Action Type Old Value New Value
    Added Description A relative path traversal vulnerability (CWE-23) in FortiWAN version 4.5.7 and below, 4.4 all versions may allow a remote non-authenticated attacker to delete files on the system by sending a crafted POST request. In particular, deleting specific configuration files will reset the Admin password to its default value.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-305
    Added Reference https://fortiguard.fortinet.com/psirt/FG-IR-21-048
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-26102 is associated with the following CWEs:

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability