CVE-2021-26109
High
Published: 08 December 2021
Published
08 December 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0126
79.8th percentile
Risk Priority
17
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-26109 is a high-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Fortinet Fortios. Its CVSS base score is 8.1 (High).
Operationally, ranked in the top 20.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-12930
Vulnerability details
An integer overflow or wraparound vulnerability in the memory allocator of SSLVPN in FortiOS before 7.0.1 may allow an unauthenticated attacker to corrupt control data on the heap via specifically crafted requests to SSLVPN, resulting in potentially arbitrary code execution.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
fortinet
fortios
7.0.0 · 6.0.0 — 6.0.12 · 6.2.0 — 6.2.9 · 6.4.0 — 6.4.5
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.