Is CVE-2025-25248 in the CISA KEV catalog?

No. CVE-2025-25248 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-25248?

CVE-2025-25248 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2025-25248?

CVE-2025-25248 has an EPSS score of 0.42% (34th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-25248?

Upgrade fortios to 7.6.3 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2025-25248

MEDIUM

5.3

CVSS v3

NVD

Description

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.

CWE-190Integer Overflow

How to fix

Remediation Available

fortiosNVD

Affected:>= 7.6.0, < 7.6.3Fixed in:7.6.3CVE-2025-25248derived from NVD

fortipamNVD

Affected:>= 1.0.0, < 1.4.3Fixed in:1.4.3CVE-2025-25248derived from NVD

fortiproxyNVD

Affected:>= 7.6.0, < 7.6.3Fixed in:7.6.3CVE-2025-25248derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.42%probability of exploitation in 30 days

34thpercentile

Low risk: more likely to be exploited than 34% of all known CVEs.

References

Vendor Advisory1

fortiguard.fortinet.com

Other references1

cert-portal.siemens.com

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-09.