CVE-2020-29016

CRITICAL

FortiWeb < 6.2.4 and 6.3.0-6.3.5 - Unauthenticated Stack-Based Buffer Overflow via Large Certname

Title source: llm

Description

A stack-based buffer overflow vulnerability in FortiWeb 6.3.0 through 6.3.5 and version before 6.2.4 may allow an unauthenticated, remote attacker to overwrite the content of the stack and potentially execute arbitrary code by sending a crafted request with a large certname.

References (1)

Core 1

Core References

Vendor Advisory x_refsource_confirm

https://www.fortiguard.com/psirt/FG-IR-20-125

Scores

CVSS v3 9.8

EPSS 0.0218

EPSS Percentile 84.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-787

Status published

Products (1)

fortinet/fortiweb < 6.2.4

Published Jan 14, 2021

Tracked Since Feb 18, 2026