CVE-2026-59840
published 2026-07-14CVE-2026-59840: A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions…
PriorityP424medium4.3CVSS 3.1
AVNACLPRLUINSUCLINAN
EPSS
0.31%
23.0th percentile
A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions may allow attacker to information disclosure via
Affected
25 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| fortinet | fortinet | — | — |
| fortinet | fortios | — | — |
| fortinet | fortios | 6.4.0 – 6.4.16 | — |
| fortinet | fortios | 7.0.0 – 7.0.19 | — |
| fortinet | fortios | >= 7.2.0 < 7.4.9 | 7.4.9 |
| fortinet | fortios | 7.2.0 – 7.2.13 | — |
| fortinet | fortios | 7.4.0 – 7.4.8 | — |
| fortinet | fortios | 7.6.0 – 7.6.2 | — |
| fortinet | fortipam | — | — |
| fortinet | fortipam | — | — |
| fortinet | fortipam | 1.0.0 – 1.0.3 | — |
| fortinet | fortipam | 1.1.0 – 1.1.2 | — |
| fortinet | fortipam | 1.3.0 – 1.3.1 | — |
| fortinet | fortipam | 1.4.0 – 1.4.3 | — |
| fortinet | fortipam | 1.5.0 – 1.5.1 | — |
| fortinet | fortipam | 1.6.0 – 1.6.2 | — |
| fortinet | fortiproxy | — | — |
| fortinet | fortiproxy | 7.0.0 – 7.0.23 | — |
| fortinet | fortiproxy | >= 7.2.0 < 7.4.14 | 7.4.14 |
| fortinet | fortiproxy | 7.2.0 – 7.2.16 | — |
| fortinet | fortiproxy | 7.4.0 – 7.4.13 | — |
| fortinet | fortiproxy | >= 7.6.0 < 7.6.6 | 7.6.6 |
| fortinet | fortiproxy | 7.6.0 – 7.6.5 | — |
| fortinet | fortiswitchmanager | 7.0.0 – 7.0.6 | — |
| fortinet | fortiswitchmanager | 7.2.0 – 7.2.7 | — |
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Fortinet
Buffer overread in authd and wad daemon
vendor_fortinet·2026-07-14·CVSS 4.3
CVE-2026-59840 [MEDIUM] CWE-126 Buffer overread in authd and wad daemon
FG-IR-26-154: Buffer overread in authd and wad daemon
A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.2, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow attacker to information disclosure via
CVEs: CVE-2026-59840
CWEs: CWE-126
CVSS: 4.3 (medium)
Affected products: FortiOS, FortiProxy, Fortinet
VulDB
Fortinet FortiOS/FortiPAM/FortiSwitchManager/FortiProxy buffer overflow
vuldb·2026-07-19·CVSS 4.3
CVE-2026-59840 [MEDIUM] Fortinet FortiOS/FortiPAM/FortiSwitchManager/FortiProxy buffer overflow
A vulnerability was found in Fortinet FortiOS, FortiPAM, FortiSwitchManager and FortiProxy. It has been rated as problematic. Affected by this issue is some unknown functionality. Performing a manipulation results in buffer overflow.
This vulnerability is reported as CVE-2026-59840. The attack is possible to be carried out remotely. No exploit exists.
GHSA
A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.2, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4.0 through 7.4.13, FortiP
ghsa_unreviewed·2026-07-14
CVE-2026-59840 [MEDIUM] CWE-126 A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.2, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4.0 through 7.4.13, FortiP
A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.2, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow attacker to information disclosure via
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-07-14
Published