๐Ÿ›ก๏ธ CVE-2025-40820
๐ŸŸ  CVSS 7.5 โ€” High โœ… No Known Exploit CWE-940 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Affected products do not properly enforce TCP sequence number validation in specific scenarios but accept values within a broad range. This could allow an unauthenticated remote attacker e.g. to interfere with connection setup, potentially leading to a denial of service. The attack succeeds only if an attacker can inject IP packets with spoofed addresses at precisely timed moments, and it affects only TCP-based services.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-940
Public Exploit โœ… No
Source NVD
Published 2025-12-09
Updated 2026-06-02
Modified 2026-04-15
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown โ€” โ€”

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