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CVE-2023-27997

Published: Jun 13, 2023Updated: Oct 24, 2025 Sources: CVE List NVD BDU csafCWE-122
9.8CRITICAL
NVD MITRE
EPSS Score
85.7%
Top 0.3%
CISA KEV
Active Exploitation
Since Jun 13, 2023
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Nuclei · OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-122CWE-787

Affected Products

Fortinet
commercial·USaka forti net
FortiProxy
Security Products
FortiOS
Security Products
FortiOS-6K7K
Security Products
Fortinet Inc.
commercial·USaka fortinet
FortiOS-6K7K
Security Products
FortiProxy
Security Products
FortiOS
Security Products
and 2 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Jun 13, 2023
Remediation due:Jul 4, 2023
Ransomware:Known ransomware use

Required action: Apply updates per vendor instructions.

Official Patch Available
Is your org exposed to CVE-2023-27997?We'll check your whole external perimeter for exposure — free. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://fortiguard.com/psirt/FG-IR-23-097
fortiguard.com
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27997
cisa.gov
https://cert-portal.siemens.com/productcert/csaf/ssa-770770.json
cert-portal.siemens.com
and 87 more references View all →
News mentions
Could not load news mentions.

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