CVE-2026-59837A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiOS 7.0 all versions,…
- 5.9MediumCVSS base score
- 0.67%Exploitation in 30 daysEPSS · top 47% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiPAM 1.8.0 through 1.8.2, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow a privileged authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests.
Timeline
ID reserved
By fortinet
- 7 days later
· 7 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| fortinetCNA (assigner) | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | Medium6.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.67% · top 47% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Affected products
- affected 7.4.0 – ≤ 7.4.1
- affected 7.2.0 – ≤ 7.2.14
- affected 7.0.0 – ≤ 7.0.19
- affected 6.4.0 – ≤ 6.4.16
- affected 7.4.0 – ≤ 7.4.13
- affected 7.2.0 – ≤ 7.2.16
- affected 1.8.0 – ≤ 1.8.2
- affected 1.7.0 – ≤ 1.7.2
- affected 1.6.0 – ≤ 1.6.2
- affected 1.5.0 – ≤ 1.5.1
- affected 1.4.0 – ≤ 1.4.3
- affected 1.3.0 – ≤ 1.3.1
- affected 1.2.0
- affected 1.1.0 – ≤ 1.1.2
- affected 1.0.0 – ≤ 1.0.3
What to do
Solution: Upgrade to FortiProxy version 7.6.0 or above Upgrade to FortiProxy version 7.4.14 or above Upgrade to FortiPAM version 1.9.0 or above Upgrade to FortiPAM version 1.8.3 or above Upgrade to FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.0 or above Upgrade to FortiOS version 7.4.2 or above
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-43703 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-59837)Record last updated .