CVE-2026-59840A 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 t…
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No exploitation reported and no EPSS estimate yet.
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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 <insert attack vector here>
- CVSS
- 4.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
- Weakness (CWE)
- CWE-126
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- fortinet
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Fortinet FortiOS fortinet:fortios | from 7.6.0 through 7.6.3; from 7.4.0 through 7.4.8; from 7.2.0 through 7.2.13; from 7.0.0 through 7.0.19; from 6.4.0 through 6.4.16 | CNA record |
Fortinet FortiPAM fortinet:fortipam | 1.7.0; from 1.6.0 through 1.6.2; from 1.5.0 through 1.5.1; from 1.4.0 through 1.4.3; from 1.3.0 through 1.3.1; 1.2.0; from 1.1.0 through 1.1.2; from 1.0.0 through 1.0.3 | CNA record |
Fortinet FortiSwitchManager fortinet:fortiswitchmanager | from 7.2.0 through 7.2.7; from 7.0.0 through 7.0.6 | CNA record |
Fortinet FortiProxy fortinet:fortiproxy | from 7.6.0 through 7.6.5; from 7.4.0 through 7.4.13; from 7.2.0 through 7.2.16; from 7.0.0 through 7.0.23 | CNA record |
Siemens RUGGEDCOM APE1808 siemens:ruggedcom_ape1808 (from the name) | all versions | CISA ADP |
fortinet fortiproxy fortinet:fortiproxy | from 7.2.0 before 7.4.14; from 7.6.0 before 7.6.6 | NVD |
fortinet fortios fortinet:fortios | from 7.2.0 before 7.4.9; from 7.6.0 through 7.6.2 | NVD |
References
- https://fortiguard.fortinet.com/psirt/FG-IR-26-154vendor-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-864900.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.