CVE-2021-26095

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, including the encryption construction of the session cookie, may allow a remote attacker already in possession of a cookie to possibly reveal and alter or forge its content, thereby escalating privileges.

Una combinación de varios problemas criptográficos en la administración de sesiones de FortiMail versiones 6.4.0 hasta 6.4.4 y versiones 6.2.0 hasta 6.2.6, incluyéndo la construcción del cifrado de la cookie de sesión, puede permitir a un atacante remoto que ya esté en posesión de una cookie, a posiblemente revelar y alterar o falsificar su contenido, escalando así los privilegios

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2021-01-25 CVE Reserved
2021-07-20 CVE Published
2023-10-12 EPSS Updated
2024-10-25 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://fortiguard.com/advisory/FG-IR-21-019	2023-08-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Fortinet Search vendor "Fortinet"		Fortimail Search vendor "Fortinet" for product "Fortimail"				>= 6.2.0 <= 6.2.6 Search vendor "Fortinet" for product "Fortimail" and version " >= 6.2.0 <= 6.2.6"		-		Affected
Fortinet Search vendor "Fortinet"		Fortimail Search vendor "Fortinet" for product "Fortimail"				>= 6.4.0 < 6.4.5 Search vendor "Fortinet" for product "Fortimail" and version " >= 6.4.0 < 6.4.5"		-		Affected