CRITICAL CISA KEV

CVE-2023-27997

CVSS v3

9.8

CRITICAL

EPSS Score

90.3%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

CISA Known Exploited Vulnerability

Date Added
6/13/2023
Patch Due Date
7/4/2023
Ransomware Use
Known

Technical details

Published
6/13/2023

Frequently asked questions

What is CVE-2023-27997?

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

Is CVE-2023-27997 actively exploited?

Yes. CVE-2023-27997 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 7/4/2023.

What is the CVSS score for CVE-2023-27997?

CVE-2023-27997 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2023-27997 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

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