🛡️ CVE-2025-48840 — fortiweb

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: None.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: None.

Weakness class

CVE-2025-48840 is classified as CWE-290: Authentication Bypass by Spoofing. Identity is inferred from something an attacker can forge, such as a header or address.

Affected software

CVE-2025-48840 is recorded against 1 package.

• fortiweb (from 7.6.0 up to 7.6.4)

Timeline and source

Published on 10 March 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

fortiguard.fortinet.com

Other advisories for this package

fortiweb has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-40688 (7.2 High, published 14 Apr 2026)
• CVE-2026-39814 (6.7 Medium, published 14 Apr 2026)
• CVE-2026-39811 (4.9 Medium, published 14 Apr 2026)
• CVE-2026-30897 (6.6 Medium, published 10 Mar 2026)
• CVE-2026-24641 (2.7 Low, published 10 Mar 2026)
• CVE-2026-24640 (6.6 Medium, published 10 Mar 2026)
• CVE-2026-24017 (8.1 High, published 10 Mar 2026)
• CVE-2025-66178 (7.2 High, published 10 Mar 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-290: Authentication Bypass by Spoofing) in other software:

• CVE-2026-14450 (9.9 Critical, published 10 Aug 2026)
• CVE-2026-65570 (8.1 High, published 6 Aug 2026)
• CVE-2026-65502 (5.3 Medium, published 6 Aug 2026)
• CVE-2026-32469 (5.3 Medium, published 6 Aug 2026)
• CVE-2026-48063 (9.5 Critical, published 3 Aug 2026)
• CVE-2026-14840 (5.3 Medium, published 1 Aug 2026)
• CVE-2026-13143 (5.3 Medium, published 30 Jul 2026)
• CVE-2026-28812 (9.8 Critical, published 30 Jul 2026)

Details

Affected Packages

References