CVE-2021-26109

An integer overflow or wraparound vulnerability in the memory allocator of SSLVPN in FortiOS before 7.0.1 may allow an unauthenticated attacker to corrupt control data on the heap via specifically crafted requests to SSLVPN, resulting in potentially arbitrary code execution.

CVSS v3 8.1 HIGH
CVSS v2.0 7.5 HIGH

8.1^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://fortiguard.com/advisory/FG-IR-21-049	Patch Vendor Advisory
https://fortiguard.com/advisory/FG-IR-21-049	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios:7.0.0:::::::*

History

21 Nov 2024, 05:55

Type	Values Removed	Values Added
CVSS	v2 : ~~7.5~~ v3 : ~~9.8~~	v2 : 7.5 v3 : 8.1
References	~~() https://fortiguard.com/advisory/FG-IR-21-049 - Patch, Vendor Advisory~~	() https://fortiguard.com/advisory/FG-IR-21-049 - Patch, Vendor Advisory

09 Dec 2021, 20:52

Type	Values Removed	Values Added
References	~~(CONFIRM) https://fortiguard.com/advisory/FG-IR-21-049 -~~	(CONFIRM) https://fortiguard.com/advisory/FG-IR-21-049 - Patch, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.5 v3 : 9.8
CWE		CWE-190
CPE		cpe:2.3:o:fortinet:fortios:7.0.0:::::::* cpe:2.3:o:fortinet:fortios::::::::

08 Dec 2021, 13:21

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-12-08 13:15

Updated : 2024-11-21 05:55

NVD link : CVE-2021-26109

Mitre link : CVE-2021-26109

CVE.ORG link : CVE-2021-26109

JSON object : View

Products Affected

fortinet

fortios

CWE

CWE-190

Integer Overflow or Wraparound

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8.1 /10