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TI-2023-12585 Aliases CVE-2023-27997GHSA-2hj2-fcr9-9p35

Heap-based buffer overflow in Fortinet FortiOS-6K7K

Priority CRITICAL 100Exploited in the wildCWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Active In CISA KEV since 2023-06-13CISA due date 2023-07-04Known ransomware use
EPSS 0.85689 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortiOS-6K7K7.0.10; 7.0.5; 6.4.12; 6.4.10; 6.4.8; 6.4.6; 6.4.2; 6.2.9 – 6.2.13; 6.2.6 – 6.2.7; 6.2.4; 6.0.12 – 6.0.16; 6.0.10—No fix listedCNA
FortinetFortiProxy7.2.0 – 7.2.3; 7.0.0 – 7.0.9; 2.0.0 – 2.0.12; 1.2.0 – 1.2.13; 1.1.0 – 1.1.6—No fix listedCNA
FortinetFortiOS7.2.0 – 7.2.4; 7.0.0 – 7.0.11; 6.4.0 – 6.4.12; 6.2.0 – 6.2.13; 6.0.0 – 6.0.16—No fix listedCNA
  • FortiOS-6K7K VendorFortinet Affected 7.0.10; 7.0.5; 6.4.12; 6.4.10; 6.4.8; 6.4.6; 6.4.2; 6.2.9 – 6.2.13; 6.2.6 – 6.2.7; 6.2.4; 6.0.12 – 6.0.16; 6.0.10 Fixed in — No fix listed CNA
  • FortiProxy VendorFortinet Affected 7.2.0 – 7.2.3; 7.0.0 – 7.0.9; 2.0.0 – 2.0.12; 1.2.0 – 1.2.13; 1.1.0 – 1.1.6 Fixed in — No fix listed CNA
  • FortiOS VendorFortinet Affected 7.2.0 – 7.2.4; 7.0.0 – 7.0.11; 6.4.0 – 6.4.12; 6.2.0 – 6.2.13; 6.0.0 – 6.0.16 Fixed in — No fix listed CNA

CPE configurations NVD · 15

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*1.1.0 – 1.1.6; 1.2.0 – 1.2.13; 2.0.0 – 2.0.12; 7.0.0 – 7.0.9; 7.2.0 – 7.2.3VulnerableFortinet
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*6.0.0 – 6.0.16; 6.2.0 – 6.2.13; 6.4.0 – 6.4.12; 7.0.0 – 7.0.11; 7.2.0 – 7.2.4; 6.0.12 – 6.0.16; 6.2.9 – 6.2.13VulnerableFortinet
cpe:2.3:o:fortinet:fortios:6.0.10:*:*:*:*:*:*:*6.0.10VulnerableFortinet
cpe:2.3:o:fortinet:fortios:6.2.4:*:*:*:*:*:*:*6.2.4VulnerableFortinet
cpe:2.3:o:fortinet:fortios:6.2.6:*:*:*:*:*:*:*6.2.6VulnerableFortinet
cpe:2.3:o:fortinet:fortios:6.2.7:*:*:*:*:*:*:*6.2.7VulnerableFortinet
cpe:2.3:o:fortinet:fortios:6.4.2:*:*:*:*:*:*:*6.4.2VulnerableFortinet
cpe:2.3:o:fortinet:fortios:6.4.6:*:*:*:*:*:*:*6.4.6VulnerableFortinet
cpe:2.3:o:fortinet:fortios:6.4.8:*:*:*:*:*:*:*6.4.8VulnerableFortinet
cpe:2.3:o:fortinet:fortios:6.4.10:*:*:*:*:*:*:*6.4.10VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions 1.1.0 – 1.1.6; 1.2.0 – 1.2.13; 2.0.0 – 2.0.12; 7.0.0 – 7.0.9; 7.2.0 – 7.2.3 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 6.0.0 – 6.0.16; 6.2.0 – 6.2.13; 6.4.0 – 6.4.12; 7.0.0 – 7.0.11; 7.2.0 – 7.2.4; 6.0.12 – 6.0.16; 6.2.9 – 6.2.13 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:6.0.10:*:*:*:*:*:*:* Versions 6.0.10 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:6.2.4:*:*:*:*:*:*:* Versions 6.2.4 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:6.2.6:*:*:*:*:*:*:* Versions 6.2.6 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:6.2.7:*:*:*:*:*:*:* Versions 6.2.7 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:6.4.2:*:*:*:*:*:*:* Versions 6.4.2 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:6.4.6:*:*:*:*:*:*:* Versions 6.4.6 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:6.4.8:*:*:*:*:*:*:* Versions 6.4.8 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:6.4.10:*:*:*:*:*:*:* Versions 6.4.10 Vulnerable ·Fortinet
Show 5 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:fortinet:fortios:6.4.12:*:*:*:*:*:*:*6.4.12VulnerableFortinet
cpe:2.3:o:fortinet:fortios:7.0.5:*:*:*:*:*:*:*7.0.5VulnerableFortinet
cpe:2.3:o:fortinet:fortios:7.0.10:*:*:*:*:*:*:*7.0.10VulnerableFortinet
cpe:2.3:h:fortinet:fortigate_6000:-:*:*:*:*:*:*:*not specified by NVDRunning onFortinet
cpe:2.3:h:fortinet:fortigate_7000:-:*:*:*:*:*:*:*not specified by NVDRunning onFortinet
  • cpe:2.3:o:fortinet:fortios:6.4.12:*:*:*:*:*:*:* Versions 6.4.12 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.0.5:*:*:*:*:*:*:* Versions 7.0.5 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.0.10:*:*:*:*:*:*:* Versions 7.0.10 Vulnerable ·Fortinet
  • cpe:2.3:h:fortinet:fortigate_6000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Fortinet
  • cpe:2.3:h:fortinet:fortigate_7000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2023-06-13 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2023-27997
  3. 2026-10-03 Alias added: GHSA-2hj2-fcr9-9p35

References

Advisory 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-36904 Authentication bypass in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-15234 A use of externally-controlled format string in Fortinet FortiOS versions 7.4.0 through… KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-14448 Out-of-bounds write in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-20674 Out-of-bounds write in Fortinet FortiProxy KEVCVSS 3.1CRITICAL 9.8
See all 276 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences