VDB-196591 · CVE-2021-26112 · FG-IR-21-065

Fortinet FortiWan up to 4.5.8 Network Daemon stack-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.9	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Fortinet FortiWan up to 4.5.8 and classified as critical. Affected is an unknown function of the component Network Daemon. This manipulation causes stack-based overflow. This vulnerability is handled as CVE-2021-26112. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Fortinet FortiWan up to 4.5.8 and classified as critical. Affected by this vulnerability is an unknown part of the component Network Daemon. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 04/06/2022 as FG-IR-21-065. It is possible to read the advisory at fortiguard.com. This vulnerability is known as CVE-2021-26112 since 01/25/2021. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 4.5.9 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Fortinet

Name

FortiWan

Version

License

commercial

Website

Vendor: https://www.fortinet.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.1
CNA Vector (Fortinet, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FortiWan 4.5.9

Timelineinfo

01/25/2021 🔍
04/06/2022 +435 days 🔍
04/06/2022 +0 days 🔍
04/08/2022 +2 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-21-065
Status: Confirmed

CVE: CVE-2021-26112 (🔍)
GCVE (CVE): GCVE-0-2021-26112
GCVE (VulDB): GCVE-100-196591

Entryinfo

Created: 04/06/2022 15:17
Updated: 04/08/2022 14:53
Changes: 04/06/2022 15:17 (40), 04/08/2022 14:48 (11), 04/08/2022 14:53 (1)
Complete: 🔍
Cache ID: 216::103