TI-2025-18910 Aliases CVE-2025-25248 GHSA-f257-v2jp-hg34

Integer overflow in Fortinet FortiOS

LOW 29CWE-190Published 2025-08-12 · Updated 2026-10-15

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.2 all versions, 6.4 all versions, FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions, 2.0 all versions and FortiPAM version 1.5.0, version 1.4.2 and below, 1.3 all versions, 1.2 all versions, 1.1 all versions, 1.0 all versions SSL-VPN RDP and VNC bookmarks may allow an authenticated user to affect the device SSL-VPN availability via crafted requests.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00515 44th 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: None
Automatable: No
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Fortinet	FortiOS	7.6.0 – 7.6.2; 7.4.0 – 7.4.7; 7.2.0 – 7.2.10; 7.0.0 – 7.0.17; 6.4.0 – 6.4.16	—	No fix listed	CNA
Fortinet	FortiPAM	1.5.0; 1.4.0 – 1.4.2; 1.3.0 – 1.3.1; 1.2.0; 1.1.0 – 1.1.2; 1.0.0 – 1.0.3	—	No fix listed	CNA
Fortinet	FortiProxy	7.6.0 – 7.6.2; 7.4.0 – 7.4.3; 7.2.0 – 7.2.14; 7.0.0 – 7.0.21; 2.0.0 – 2.0.14	—	No fix listed	CNA

FortiOS VendorFortinet Affected 7.6.0 – 7.6.2; 7.4.0 – 7.4.7; 7.2.0 – 7.2.10; 7.0.0 – 7.0.17; 6.4.0 – 6.4.16 Fixed in — No fix listed CNA
FortiPAM VendorFortinet Affected 1.5.0; 1.4.0 – 1.4.2; 1.3.0 – 1.3.1; 1.2.0; 1.1.0 – 1.1.2; 1.0.0 – 1.0.3 Fixed in — No fix listed CNA
FortiProxy VendorFortinet Affected 7.6.0 – 7.6.2; 7.4.0 – 7.4.3; 7.2.0 – 7.2.14; 7.0.0 – 7.0.21; 2.0.0 – 2.0.14 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:fortinet:fortios::::::::	6.4.0 to before 7.2.11; 7.4.0 to before 7.4.8; 7.6.0 to before 7.6.3	Vulnerable	Fortinet
cpe:2.3:o:fortinet:fortipam::::::::	1.0.0 to before 1.4.3	Vulnerable	Fortinet
cpe:2.3:o:fortinet:fortipam:1.5.0:::::::*	1.5.0	Vulnerable	Fortinet
cpe:2.3:a:fortinet:fortiproxy::::::::	2.0.0 to before 7.4.4; 7.6.0 to before 7.6.3	Vulnerable	Fortinet

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 6.4.0 to before 7.2.11; 7.4.0 to before 7.4.8; 7.6.0 to before 7.6.3 Vulnerable ·Fortinet
cpe:2.3:o:fortinet:fortipam:*:*:*:*:*:*:*:* Versions 1.0.0 to before 1.4.3 Vulnerable ·Fortinet
cpe:2.3:o:fortinet:fortipam:1.5.0:*:*:*:*:*:*:* Versions 1.5.0 Vulnerable ·Fortinet
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions 2.0.0 to before 7.4.4; 7.6.0 to before 7.6.3 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-25248
2026-10-03 Alias added: GHSA-f257-v2jp-hg34

References

Advisory 1

https://fortiguard.fortinet.com/psirt/FG-IR-24-364

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-2023-12585 Heap-based buffer overflow in Fortinet FortiOS-6K7K 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