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Medium severity5.4NVD Advisory· Published Dec 19, 2024· Updated Jun 17, 2026

CVE-2020-12819

CVE-2020-12819

Description

A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 and 6.4.1 and earlier may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel mode is enabled. Arbitrary code execution may be theoretically possible, albeit practically very difficult to achieve in this context

Affected products

3
  • Fortinet/Fortios2 versions
    cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*range: <5.6.13
    • cpe:2.3:o:fortinet:fortios:6.4.1:*:*:*:*:*:*:*range: 6.4.0
  • Fortinet/Fortigatellm-fuzzy
    Range: <=6.4.1

Patches

Vulnerability mechanics

References

1

News mentions

0

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