CVE-2021-26109 — Integer Overflow or Wraparound in Fortinet Fortios

CWE-190 — Integer Overflow or Wraparound4 documents4 sources
Severity
9.8CRITICALNVD
CNA8.1
EPSS
1.3%
top 20.60%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Fortinet FortiosFortinet Fortios
Timeline
PublishedDec 8
Latest updateDec 9

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶NVDfortinet/fortios6.0.0 — 6.0.12+3
▶CVEListV5fortinet/fortinet_fortiosFortiOS before 7.0.1

Patches

Patch: fortiguard.com ↗Patch: fortiguard.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-9h5m-38gw-j896: An integer overflow or wraparound vulnerability in the memory allocator of SSLVPN in FortiOS before 7↗2021-12-09
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CVEList
CVE-2021-26109: An integer overflow or wraparound vulnerability in the memory allocator of SSLVPN in FortiOS before 7↗2021-12-08
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📋Vendor Advisories

1
Fortinet
An integer overflow or wraparound vulnerability in the memory allocator of SSLVPN in FortiOS before 7.0.1 may allow an u...↗2021-12-08
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CVE-2021-26109 — Integer Overflow or Wraparound | cvebase