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nvd[email protected]NVD:CVE-2021-42756
HistoryFeb 16, 2023 - 7:15 p.m.

CVE-2021-42756

2023-02-1619:15:11
CWE-121
CWE-787
web.nvd.nist.gov
3
cve-2021-42756
buffer overflow
fortiweb 5.x
arbitrary code execution
remote attacker
http requests

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

10 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

52.7%

Multiple stack-based buffer overflow vulnerabilitiesย [CWE-121] in the proxy daemon of FortiWeb 5.xย all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4ย all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests.

Affected configurations

NVD
Node
fortinetfortiwebRange5.6.0โ€“6.0.8
OR
fortinetfortiwebRange6.1.0โ€“6.1.3
OR
fortinetfortiwebRange6.2.0โ€“6.2.7
OR
fortinetfortiwebRange6.3.0โ€“6.3.17
OR
fortinetfortiwebRange6.4.0โ€“6.4.2

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

10 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

52.7%