Cyber Resilience

CVE-2025-53844

HighUpdated

Published: 12 May 2026

Published
12 May 2026
Modified
09 June 2026
KEV Added
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Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0056 42.7th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2025-53844 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Fortinet Fortios. Its CVSS base score is 8.8 (High).

Operationally, ranked at the 42.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.

CWE(s)
CWE-787

Related Threats

CVEs Like This One

CVE-2025-53847Same product: Fortinet Fortios
CVE-2025-64157Same product: Fortinet Fortios
CVE-2024-40591Same product: Fortinet Fortios
CVE-2024-46668Same product: Fortinet Fortios
CVE-2026-22153Same product: Fortinet Fortios
CVE-2024-35279Same product: Fortinet Fortios
CVE-2024-46670Same product: Fortinet Fortios
CVE-2025-25249Same product: Fortinet Fortios
CVE-2024-55591Same product: Fortinet Fortios
CVE-2024-26006Same product: Fortinet Fortios

Affected Assets

fortinet
fortios
7.2.0 — 7.2.12 · 7.4.0 — 7.4.9 · 7.6.0 — 7.6.4

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References