🛡️ CVE-2025-48839 — fortiadc

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

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

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: High — administrative rights are needed first.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2025-48839 is classified as CWE-787: Out-of-bounds Write. Data is written past the end or before the start of a buffer, corrupting whatever is stored there.

Affected software

CVE-2025-48839 is recorded against 1 package.

• fortiadc

Timeline and source

Published on 18 November 2025 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

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

• CVE-2025-58412 (4.7 Medium, published 19 Nov 2025)
• CVE-2025-54971 (4.3 Medium, published 18 Nov 2025)
• CVE-2025-59921 (6.5 Medium, published 14 Oct 2025)
• CVE-2025-49813 (7.2 High, published 12 Aug 2025)
• CVE-2025-31104 (7.2 High, published 10 Jun 2025)
• CVE-2023-37933 (8.8 High, published 11 Mar 2025)
• CVE-2022-23439 (4.7 Medium, published 22 Jan 2025)
• CVE-2024-36511 (3.7 Low, published 10 Sep 2024)

Same weakness in other software

These advisories are the same class of weakness (CWE-787: Out-of-bounds Write) in other software:

• CVE-2022-29208 (8.0 High, published 9 Jul 2026)
• CVE-2022-23561 (8.0 High, published 9 Jul 2026)
• CVE-2019-9423 (8.0 High, published 9 Jul 2026)
• CVE-2018-5268 (published 9 Jul 2026)
• CVE-2017-12606 (8.0 High, published 9 Jul 2026)
• CVE-2019-5063 (8.0 High, published 9 Jul 2026)
• CVE-2017-12605 (8.0 High, published 9 Jul 2026)
• CVE-2017-12603 (8.0 High, published 2 Jul 2026)

Details

Affected Packages

References