CVE-2026-59840: Information disclosure in Fortinet FortiOS
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 <insert attack vector here>
AI Analysis
Technical Summary
This vulnerability involves a buffer over-read in Fortinet FortiOS and FortiProxy products across multiple versions, potentially allowing an attacker with low privileges to disclose information. The CVSS 3.1 base score is 4.1 (medium), reflecting network attack vector, low complexity, no user interaction, and impact limited to confidentiality. The vulnerability affects FortiOS 7.6.0 through 7.6.2, 7.4.0 through 7.4.8, all 7.2 versions, and FortiProxy 7.6.0 through 7.6.5, 7.4.0 through 7.4.13, and all 7.2 versions. Fortinet has released official patches to address this issue.
Potential Impact
An attacker with low privileges can exploit this buffer over-read vulnerability to disclose sensitive information from affected FortiOS and FortiProxy devices. There is no impact on integrity or availability reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
Fortinet has released official patches to fix this vulnerability. Users should apply the available updates to affected FortiOS and FortiProxy versions promptly to mitigate the risk of information disclosure.
CVE-2026-59840: Information disclosure in Fortinet FortiOS
Description
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 <insert attack vector here>
CVSS v3.1
Score 4.1medium
Affected software
cpe:2.3:a:fortinet:fortiswitchmanager:7.2.7:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiswitchmanager:7.2.6:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiswitchmanager:7.2.5:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiswitchmanager:7.2.4:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiswitchmanager:7.2.3:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortiswitchmanager:7.2.2:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a buffer over-read in Fortinet FortiOS and FortiProxy products across multiple versions, potentially allowing an attacker with low privileges to disclose information. The CVSS 3.1 base score is 4.1 (medium), reflecting network attack vector, low complexity, no user interaction, and impact limited to confidentiality. The vulnerability affects FortiOS 7.6.0 through 7.6.2, 7.4.0 through 7.4.8, all 7.2 versions, and FortiProxy 7.6.0 through 7.6.5, 7.4.0 through 7.4.13, and all 7.2 versions. Fortinet has released official patches to address this issue.
Potential Impact
An attacker with low privileges can exploit this buffer over-read vulnerability to disclose sensitive information from affected FortiOS and FortiProxy devices. There is no impact on integrity or availability reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
Fortinet has released official patches to fix this vulnerability. Users should apply the available updates to affected FortiOS and FortiProxy versions promptly to mitigate the risk of information disclosure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- fortinet
- Date Reserved
- 2026-07-07T15:21:36.593Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 6a565a3d68715ace43c7b74e
Added to database: 07/14/2026, 15:48:13 UTC
Last enriched: 07/14/2026, 16:09:00 UTC
Last updated: 07/15/2026, 03:35:14 UTC
Views: 41
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